Forced to go into Sonar to enter a musical collaboration with a musician friend in another country, I have come to absolutely love the simplicity of many of the plugins and features (my use of Reaper helps). The thing just works very nicely once past the fairly gentle initial learning curve. Sonar's native plugins sound great with a minimum of bells and whistles - which suits my personal taste: I hate the 'programmer-friendly' cluttered interfaces of a lot of expensive and well-regarded third party products.
So, just. A little rambling note to say Sonar is great, the upgrade price was just right at $120 and I just finished a couple of great-sounding mixes with everything Sonar, except for my un-touchable Clariphonic (best freaking high-frequency enhancer ever) and Phoenixverb.
So, BIG thanks, Cakewalk, and keep those upgrades coming!