Dawg said it best. I was about to trade up my T|X for a Treo 755P but I checked out the 8330. The BB deal-closer for me (in addition to the other BB advantages) was being able to import 400+ contacts and appointments from my Palm Desktop to the BB.
Palm does have 1 advantage. They have over 20,000+ software titles available since it is a more mature (old) OS and has been out there a lot longer. It's a tired OS with few updates, many promises (broken) by the Palm CEO, late devices to market, being outclassed by BB, WM and Symbian, and the list goes on and on. Palm is now considered by many to be a 'legacy device', to include their upcoming Treo 800W which STILL does not have the features that the Palm faithful have been demanding for many years.
The Palm folks are tired of being left in the dust and are abandoning Palm for other pastures. I, for one, like it here.