Being in L.A., everyone I work with uses every available platform that's right for the task at hand. But the common thread is that the project usually ends up in PT at some point or another. Does PT sound the best? No. But, it could with the right converters. I'm currently doing a 5.1 mix for a DVD project and PT is the DAW of choice for this task simply because it works. Most of the stuff I get starts in DP or Logic and ends up in PT. What's the point to this reply? Get whatever your clients need you to have so you can deliver the best sounding product in the quickest time possible. Efficiency is the key. If you do this time and time again, you'll always be working.