Comparing the two is comparing apples to oranges. I prefer productivity with the option of entertainment available to me vs. An entertaining phone in which productivity is secondary to its functionality. Thus I have always rolled with a 'berry. Currently have a Tour but will probably get the 9650 in a month or two unless something newer comes a long in the meantime.
Remember that a Blackberry is primarily an email machine with its unique "push email" system. So, it excels above all other smartphones when it comes to email and sms. If those are your priorities then I would go with a 'berry.
If you prefer a phone to talk on, text moderately and the 3rd party apps (games, etc.) will be its primary use, then the Samsung or any of the Droid based phones are for you. Maybe even hold out until the iPhone hits the VZW lineup.
Now, don't get me wrong, the Blackberry probably has the largest selection of apps out there because it has been around longer than the other devices. But most 'berry users try not to sacrifice too much of the memory for anything more than the apps they use often. Rarely will you see a 'berry loaded up with games and instant messengers even though they are available.
I guess what I'm saying in a nutshell is... if you want a "fun phone" get the Samsung or one of the other new toys available. If you're looking for a workhorse device that is going to keep you productive and reliable.. go with the 'berry.
I'm due for new phone now too. I use my phone for emails, web, and most importantly syncing my Microsoft Outlook contact, tasks, and calendar. I know the BB does it but do these other Droids? The Blackberry torch looks perfect...I want a keyboard and touch screen.