While I prefer using Sonar over Pro Tools, I have never met one person using Sonar in the Portland music scene, nor have I actually met another Sonar user in the flesh ever (seriously)... and I've been around - using Sonar since Cakewalk 3.0 in the 90's and my band has been playing since '96.
When I started doing "professional" studio work (outside of doing my band for a living) I quickly realized that life would be a lot easier if I owned Pro Tools. Every single project that has come my way has been a Pro Tools session except for maybe one Logic session. While I certainly don't think Pro Tools is the S**t... I definitely seems like it's still the industry standard. Thankfully I was able to purchase the Native version and not have to buy into their ridiculously priced hardware...
There are definitely some very huge problems with Pro Tools from my perspective. Like Dave Modisette mentioned, their Native software is unnecessarily crippled by their hardware system (I curse a lot when I'm using it)... and their poor hardware users are charged ridiculous upgrade fees for already overpriced hardware... not to mentioned all the old HD users that kind of got screwed during the AAX transition. I don't know what Avid is doing/thinking but it doesn't feel very good so far...
I'm torn between wanting Avid go bankrupt or drop Pro Tools and have them de-throned or hoping that Avid gets their s**t together and makes Pro Tools a great modern DAW that borrows all the great features from other platforms that have been around for the last 10 years. If the latter, then I've got two good DAWs and probably won't have to learn another one. If Pro Tools is de-throned, then who becomes the industry standard? I mostly hear about Logic being used otherwise. Not sure if I want the industry standard program to be an Apple based product...
Guess I'll just keep waiting and watching. Like all things music industry related - I hope for the best, but expect the worst. I'm still rooting and hoping for Sonar to keep getting better and better...
-Benjamin