Mark, welcome to the forums! FWIW Mark and I have collaborated on several bits of music, and he's one of the few songwriters whose music I cover.
As you can see, this is a remarkably helpful community. We've never discussed why I use SONAR, and I'll echo the previous comment that Studio One is a fine program. But here are what keep me coming back to SONAR, year after year.
I started with SONAR back in 2000 because at the time it was the
only program that deep an equally good job of MIDI, hard disk recording, and looping. So its competition was...there was no competition.
The Cakewalk folks would always thank me at trade shows for my support, but my reply was always that I'd switch in a heartbeat if I found something better, just as I'd switched to SONAR originally. Obviously I'm still using SONAR...my top 10 reasons:
1. I've got it down to where I can create songs really, really fast. It took a while to figure out a workflow that was ideal for me, and I suppose I should write about it in more detail, but SONAR has been key to my surge in productivity.
2. It still handles audio, MIDI, and looping really well. It is the only program other than Sony Acid (which I believe will not be updated further) that can create, edit, and save Acidized loops.
3. It can handle anything I throw at it, from narration to songwriting to developing loop and sample libraries. EVen though I use Ableton Live onstage, all the prep work creating the files to use in Live happens in SONAR.
4. And speaking of Live, SONAR's Matrix View is really cool although it seems to baffle a lot of people.
5. The look. I like the way it looks. Of course appearance is subjective, and the third-party plug-ins contribute to a "designed by committee" feel, but I find the core program visually inspiring.
6. The ProChannel. I believe SONAR is the only program that lets you create your own virtual mixer architecture, e.g., replicate different types of consoles on different channel strips.
7. It has lots of stuff included. That makes it very easy to collaborate with other SONAR users because you don't need to go to other companies as much. Many of the plug-ins in SONAR are underrated simply because they're old, but in reailty, a synth like Rapture got it right the first time. If it had never existed and appeared tomorrow, it would be hailed as an amazing VST. Dimension Pro...not so much, but it still has a lot of useful sounds. What's overlooked the most are synths like PSYNE II, with possibly the most ugly interface of all time, and Z3ta, which while not the second generation version does lots of cool things.
8. Some of SONAR's unique features are outstanding, like Mix Recall, VocalSync, the new control bar, Speed Comping (the best implementation of comping hands-down, IMHO), FX Chains, and what you can do with keyboard commands. Others are similar to other programs, but very well implemented (like Multidock).
9. MIDI FX. I don't know why the whole concept isn't more popular, and the roster hasn't changed much over the years, but they can be very handy.
10. My CA-X amps
Now, here are what are downsides to me.
1. It's Windows-only, and Windows was never designed with real-time, low-latency audio streaming in mind. So you have to do certain things or pay the price - like disable drivers that aren't being used, laern what Task Manager is about, and keep your system up to date. I can't tell you how many "SONAR sucks donkey ballz, it crashes all the time!!" end up being some errant Windows driver or graphics card. (It doesn't occur to these people that if SONAR had some inherent flaw that caused it to crash every few minutes, the forum would be filled with users carrying pitchforks and torches.) The upside is once you get a Windows system running smoothly, SONAR is extremely stable. I haven't had a freeze, glitch, crash, or hiccup since upgrading to Platinum. That's pretty cool, given how hard I've been pushing it.
2. Quality transposition is available only in semitones and is not real-time. It's possible to tweak tunings, but I'd like it so much better if the iZotope transposition algorithm - which is really excellent - could do cents.
3. It can handle 32-bit plug-ins. This may seem like an advantage, and it usually is. However it opens the door to using plug-ins that can lead to instability.
4. There's no user-friendly sampler for creating your own instruments. You can create instruments for Rapture and Dimension Pro, but you have to script how the samples are mapped and such. It's not horribly difficult but it did make my brain explode at first. Some people ReWire Reason into SONAR to take advantage of their NN-XT sampler and other instruments, or just say "screw it" and get Kontakt with a ton of content.
5. Cakewalk isn't always clear about what functions are and are not supposed to do. For example AudioSnap is similar to Beat Detective, and works best with percussive material. So if someone applies it to a drum or bass track, generally it will work well. But then some people bring in an entire song and expect AudioSnap have it conform to a tempo, and it just can't do that effectively. The only algorithm I've seen that can do that is the super duper advanced algorithm in Ableton, for which they probably paid a pretty penny in licensing...
6. The same petty annoyances I find in all other programs.
It does have a learning curve if you want to take full advantage of it, but you can find your way around the essentials relatively easily.
DAWs are like people, they're all different and with some, you hit it off and with others, you don't. I hit it off with SONAR and it has performed extremely well for me on all levels. So I keep using it. And I must say, I think the membership thing is going to be huge.