I tried running SONAR on Parallels on my Mac and it ran dog slow. Not very reliable performance.
 
Previously I ran SONAR (and Live) on a Bootcamped Mac. Live did okay for simple clip triggered stuff but when I started adding synths it didn't like it. Really good Virtualization seems a ways off still. I'd stick with the OS the program was written for until then.

I used to be a PC tech and did repairs on all kinds of machines... Macs were always the worst to deal with and still are. So hung up in proprietary everything that it caused too many problems to be worth the effort...

I was very kindly gifted this dual-quad Mac Pro and converted into a windows machine... Works great except for DVD drive eject which I've never managed to get to work from the keyboard based button... Though it was supposed to work with this keyboard in Bootcamp mode... My cpu meters barely show any activity even with large projects... Sadly I'm stuck mostly running on a relatively low powered laptop at the moment whike my DAW sits silent in the dark of my studio...

I was also gifted a dual-6 core macpro with 4 500G SSDs in a raid array, but haven't had the extra cash I need to make it what I need... Someday...

But unto my own? I would not have bought a Mac and if lucky enough to be able to afford sch, would have opted for a true windows based multi-processor machine...

So unless you fit into one of these categories......

Keni

It occurs to me that I ought to qualify my use of the Macbook with Sonar a bit beyond what I stated previously, lest anyone think they can run out and buy a MacBook Air tomorrow and leave the Microsoft world behind. My Macbook is used primary for my day job: Architecture. I run Autodesk Revit software in Windows 7 via Parallels all day, every day. It works great. However, in order to have access to sufficient resources for use of Revit and - back to music talk - Sonar while running a virtualized OS i've obtained a monster of a machine. It's a $3600 machine, to be clear. Indeed, as others have stated, Mac's are expensive and you can spec equal or better hardware for the same money if you stick with a Windows machine. I could build one hell of a machine for running Sonar natively in windows with that money. In fact, my studio PC is a $1500 (in 2006) machine I built and have upgraded over the years with additional RAM and faster hard drives. It runs the latest version of Sonar incredibly well, arguably better than my newer and far more powerful Mac. The key, I believe, is that I ONLY use it as a DAW, so 100% of it's resources are dedicated to running Sonar and the VSTs within.
Contrary to what a few other commenters have advised, I've found the Mac OS to be substantially more stable and better organized than the latest Windows builds. I am a Windows enthusiast (dating back to Windows 3.1), so I don't make that statement lightly. 
On the audio front, I dream that Microsoft will someday implement interface aggregation (no, ASIO4ALL doesn't cut it), and connectivity features that can hold a candle to what Apple has built into their OS. Every piece of hardware in my studio that can communicate with a computer does so more effectively with Mac OS X than it does with Windows 7 (or 8, for that matter).

I don't like laptops and I prefer to create music on desktops to portability is never an issue for me. If I had to buy a laptop I'd go with a Mac and learn Logic.

There is only one big reason to change operating systems and that is the latency of the audio interface driver (specifically written for the operating system)/and the layer between it and the main OS.

Linux for instance I have found huge benefits over windows in this area from tests. Sadly I can't get Platinum to run under Wine (close but no cigar). I just have a problem with a few DLL's, if anybody has managed it please ping me!

Apple users will still have to run Windows with Sonar so no benefit. Windows is pretty crappy on this area to be honest, apparently there may be big improvements to come in windows 10 according to the bakers as MS is finally waking up to the fact that some customers need low latency.

if like me?... you never used one...just the mouse use is a learning curve/seems all backwards to me...but it can be changed...(I hate Mac mouse)(and the keyboard is nice, but that also is a learnigncurve...and how does one rename a folder of file?...how do you delete? and or copy paste....yah a learning curve...So go slow...youtube has some help to setup a MAC for Audio....I am still not using my mac for much, but am slowly building up the programs for Audio and such...So many updates to the osx at this point since I got it back 9 months ago....The audio drivers for Focusrite Pro 40 were not working well, and still, after a update last week of them, and a resetup of logic, only to see play back having crackle on the head set /out//...after yet another update today!....I do not turn it on much, as I still have hope for my PCs to run the studio, as I was born with PC mainia....Until I find a way to turn off the audio updates on mac and remove the startup apps and such things off the taskbar I do not use, and other things opening up when booted automatically, to get under control...Still learning...while testing new things on PC with win 8.1, and perhaps win 10...a back up system is a good thing to have....when doing music recording....I am sure which ever system is used...there will be issues!.....wink....the new Mac is a screaming beast...but it lacks Blu ray and dvd cd and other things...yet cost more!...less is more.....and more is no more les!

reactorstudios
On the audio front, I dream that Microsoft will someday implement interface aggregation (no, ASIO4ALL doesn't cut it), and connectivity features that can hold a candle to what Apple has built into their OS. Every piece of hardware in my studio that can communicate with a computer does so more effectively with Mac OS X than it does with Windows 7 (or 8, for that matter).

Just in case anyone misunderstands your comments, Windows can aggregate WDM devices, but the implementation is not as good as Core Audio.

Ah ha...The real bug in all this bug fix updating and cost to get working, is being revealed it seems by ....Anderton...slowly but surely...in secret code....lol

I use Windows and Mac computers. I prefer Windows desktop for heavy-duty audio and video work because of the bang-for-the-buck factor. I also prefer Windows laptops for live performance because they're easier to replace or repair, or even carry a spare mirrored laptop as backup. Windows takes more work to set up properly but once it's done, it's done.
 
I use my Mac desktop for office work, spreadsheets, watching movies, writing articles and books, etc. In other words, I use Windows for applications often associated with the Mac, and vice-versa. In technical terms, I'm a** backwards 
 
My Mac has DP, Pro Tools, Logic, Live, and some other music programs installed. Logic is IMHO the most "SONAR-like."
 
For laptops, I also have both Windows and Mac. My laptop case allows me to take both, which I often do when travelling.
 
Overall, I see many more similarities than differences. The only application where I think you really must have a Mac is desktop publishing, and you really need Windows if you plan to run scientific applications. For anything else, they both have strengths and limitations. 

I  know that feeling of mainia PC....but it is not a reality...it is a delusion of great strength Anderton to break through....wake up...lol..you have to pay to play!....so they say....wink....ah good fun!...Mac and PCs can cause hair loss...pick one!