I'm staying with X1 for right now. Earlier this year, I upgraded from 8.5 Producer to X1 Producer and then sometime in the summer went to Expanded. To be honest with you, X1 is meeting all my needs and I still feel as though I am learning it.

I purchased X2, just haven't had time to install it yet. Kind of a crazy time of year for me. Looking forward to jumping in though. 

waiting for an x2 demo/trial version here :)

I went from 8.5 to X1 for a week or two, and then to X2 when it came out. I'm running it on Win XP and have only had a couple of crashes when right clicking on a clip, for some reason. For me, so far, this seems like the most stable and easy to use version to date. I didn't get to learn much about X1 before switching, so I'm not sure how much is the same, but to me AudioSnap is miraculously better and easier to use, track lanes are awesome (though there are still a couple of minor areas for improvement there), skylight is great, automation, for the most part, seems greatly improved, PRV is better (though I"m still getting use to some of the tool commands) and more. One area I have trouble with is using the smart tool for automation. It just doesn't feel as intuitive to me, but I'm still getting use to it. I'm still learning a lot, but to me, this upgrade was definitely worth it, and I'm looking forward to using it with Win 8 when it comes out next week. Hope that doesn't change my tune.

i'm interested to hear how the xp/vista users cope with the next update that supposedly won't install on sub-win7 machines

XP is not supported. Reports are that it will install however but patches won't install. I wouldn't bother upgrading to Windows 8 on an XP machine as you might as well replace your hardware at the same time.

My view is stick with X1 if you have XP. If you have Vista upgrade to Windows 8 (if your drivers can handle it) as the upgrade is really cheap. I'm sticking with Windows 7 right now.

One of my fav sayings "You can recognize the pioneers by the arrows in their back" has held me back, at least until I get new hardware and OS.

I bought a new powerful desktop early 2012 so I could go 64bit with more memory using 8.5 and was really satisfied.  But I've always had an issue with "controlling" the flow of windows... opening/closing/minimizing/moving/reopening... all this was done with speed and power, but I was constantly thinking "I need another monitor to move some of this stuff out of the way without closing..." Then in august I saw the Upgrade to X1 and get X2 free. The price was right and X1 had been tweaked to be pretty stable and work well in a 64 bit environment.

So I bit.  Had X1 for about 2 weeks then upgraded to X2.... I couldn't be happier. I feel guilty that I don't have the problems others have, but I, also, feel that X2 improved my "musicality"  I find my self working more and moving things out of the way less. Now, instead of wanting a second monitor, I'm looking for a slightly larger monitor just to make everything a little bigger.  If you look at the webinar, everything that is discussed has been a huge leap forward for me. Auto Zoom, Track Layers, FX chains, TH2, Breverb.... all things that came with X2 I think.

Again, my system seems to work very nicely with X2 right out of the gate, so I may be spoiled, but I haven't been this excited about creating since I first started using Cakewalk (Professional? Pro Audio? it was a long time ago)

As CakeAlexS says, you can run X1 and X2 side by side. If you have issues with X2, use X1 until they're worked out. BUT if you're like me and your problems are minimal you'll be doing yourself a favor by using X2

Just my 2 cents (actually, more like 4 cents, sorry)

Best,
Rob

Just jumped on the X2 train this week...
 
I really like the new GUI. It's cleaner somehow and easy on the eyes.
 
I read mixed reviews on Breverb, but I have to say that every time I've used it, it's sat well in the mix. I'm looking forward to putting it to some serious use.
 
But the coolest thing for me in the short time I've had it was that I have a song I have been working on a song that incorporates a loop section with a repeating high frequency percussive sound that was really detracting from the main rhythm. I really like the loop, but was bummed about that sound. I threw RMix on it and with some experimentation, I was able to completely removed the offending frequencys without effecting the rest of the loop. I was blown away. I couldn't have achieved the same result with EQ alone. I do wish that you could have more than 1 area of focus in RMix, but I'm definitely not complaining.
 
I've had 2 white screens / freezes, but no harm was done. They seemed random (one happened while I was away from my DAW), but I'll figure it out...
 
I've paid $179 - $200+ for many Sonar upgrades over the years... $99 is a great deal.
 
V

I jumped straight into X2 when it was first released, and there's no way on earth I'm ever going back to X1.