I will say that any kind of interruptions to creative work flow are really frustrating, and I too am sorry someone got to the point of walking away from Sonar.
Someone earlier had mentioned crappy drivers from some external hardware companies, and I too have seen that over and over again.
Further, there are a BUNCH of companies that will not have Windows 8 drivers available for quite some time, and yet the Cakewalk folks had to develop X2 and its touch support in the vacuum of not having those products able to be used in testing. That certainly complicated the Sonar development efforts, but overall it is a pretty good version.
Yes there are bugs, and hopefully they will get addressed as soon as possible - there were a whole bunch of fixes in the X2a release.
And, a lot of issues reported are really due to settings needing tweaking, or folks not reading the manuals or doing the tutorials. By all means not all - there are still bugs for sure.
I have also seen now several instances where someone has reported being fed up with a lack of support, but they hadn't posted the issues, and therefore nobody could help them with the ones that could be helped. They just kept it bottled up inside, until the frustration got so great that they snapped and essentially rage quit.
Really, there are a whole lot of folks in this community forum, and we are all on the same team - trying to make music using Sonar. We all are here to learn, to resolve, and to help each other whenever we can.
So, please, if you are out there having issues - post them so if they can be helped they will be helped. Maybe that will help the next guy/gal get things working better, so they don't feel they have to leave.
Bob Bone