Sorry to hear of your Sonar troubles. Unfortunately, I can only back up your statement of it being buggy. I find it gets more and more bloated with every version. They add new features while breaking old ones. I gave up on customer service in 2000. It seems they won't even acknowledge a problem unless it is backed by an angry mob with burning torches.
I've learned "workarounds" for many ongoing bugs. Enough to make it usable. The same bugs persist through multiple pc rebuilds, both amd and intel processors, at least 10 XP Pro installs, multiple audio and midi interfaces, everything. I bought the v7 upgrade early December. I haven't installed it and I am almost afraid to. Why? Because, despite the much needed improvements in 7(sidechaining for one), v6 is working right now. I don't know if v7 will, and if it doesn't will I be able to go back to v6 without having to reinstall windows. I got v7 in a cross promo w/ UA which saved me money on the ridiculous upgrade fee($189, 6pro to 7pro). They also threw in Pyro(useless to me) and "Sonar 7 Power!"(here's my review of the 600+ pg brick - I weep for the trees...). They probably have tons of stock on those two. Oh, and another thing, v7 came out in Oct '07. They're already at 7.0.2. The two patches, together, are 162 mbs.
When I bought Kontakt2, I tested it in Sonar using a Les Paul sample set from the Kontakt library. I did a decent amount of pitchbend automation on the Sonar midi track to emulate bends and unique vibratos. It played back perfectly in real-time. When I went to Export/Mixdown, Sonar couldn't handle a single measure. It would just go nuts with the pitchbend automation. Total c**p! I exported the midi track with all the pitchbend data as a .mid file. I loaded it in Reaper and set up Kontakt the same as in Sonar. It played back just as good as it did in Sonar. I exported/rendered the track(using Reaper) and it did it flawlessly! That's how I was able to finish the track in Sonar! Load the rendered file from Reaper into Sonar. That's just stupid.
Check out
Reaper. I really like the whole idea and it is constantly being improved. Some people don't like that there can be updates almost weekly. After paying for Cakewalk "updates" for years, I find it refreshing and it shows a certain passion I haven't seen from Cakewalk since the mid 90s. I'm just waiting for a few midi issues to get worked out within Reaper. Once they're remedied, I'm switching.
I agree, Sonar
could be a great DAW. It's a shame. It just feels like they want my money more than they want my business. Does that make sense?
Why do I keep using Cakewalk/Sonar? I've used it since '94. It's what I know.