VSTI integration is solid and pain free for me in Sonar. No other DAW does this better and this is a basic in my configuration.

Mix recall, screen sets, the fact that it works with my M-audio ProjectMix... everything really :( I will go on using it until the bitter end I think, but I will look for an alternative and get through the learning curve before Sonar gets to the bitter end.

 
Presumably some of these features are available in other DAWs, but some are likely exclusive to SONAR:
Mix recall, Dim solo, Ripple editing, External effects insert, Drum replacer, Aux tracks, Custom keystrokes, Clip/Track property inspector, and many more.   
 
Also, I will miss the fantastic SONAR community and this forum. I don't post much, but visit the forum often.

Fly out EQ on the PC. And most other things about the PC. Plugin window switching. Keyboard shortcut customisation, and the deep integration of keyboard shortcuts generally. Alexey's plugin that gave me extensive customizable control over control surfaces. Adaptive limiter. Little things too many to mention. Now I'm getting upset again. Damn.

space_cowboy
 
Happy Thanksgiving if you are in the US.  Otherwise, have a great Thursday wherever you are (UK ?)
 

Thanks, Maurice, yeah, UK.
 
Have a great Thursday too