I may well not buy X3 either, but not because I have a grudge against a new owner. Unless there are some really useful new features in MIDI and softsynth technology, I probably already have as much Sonar as I will ever use. I have long ago given up on notation. Things like pitch correction and loop construction are useless to me, and most of the audio processing plugins are almost useless for someone who primarily uses a microphone for sampling.
DAW software is rapidly reaching the point that office suites hit with Office 2000. New "innovations" are pretty much not applicable to the work they are meant to do. Will Sonar X3 have an associated cloud account?