To the original poster - should you happen to take a read through this thread at some point -
1) Since you had a year's worth of Sonar under the new model, your installed Sonar will continue to be able to run at its current maintenance point for forever (or until some future OS maintenance renders it no longer operative), so you can still use Sonar as you please.
2) I would think that as noted by Craig in an earlier post to the thread, it is a good bet that the Cakewalk staff would be interested in some detail as to what your issues are with Sonar, and who knows, maybe there is a way to resolve those issues for you, so it may well benefit you (and others) for you to explain what those issues are.
3) This was the nicest goodbye thread I can recall seeing - in any case, best of it all to you :)
Bob Bone