Coming from multiple blackberry phones, either used personally or tested by me (8330, 8530, Tour, Bold 9650) this phone is a different animal. And I mean animal.
I'll start off with the bad/cons.
If you do a TON of email a day and have BES, a blackberry is better. I'm not gonna lie. Good thing is, I don't.
Standard battery life is ok. I bought the 2750 with it...so I'm good.
I can't use my case in the car dock. I haven't tried the car dock w/ the 2750.
I have nolock installed, but whenever I hit the volume buttons, it wakes it up...poop.
Camera (still and video) a little dissapointed in low light situations, otherwise they're fine.
Market is not up to Apple yet in terms of # of apps...but it's getting better day by day.
It is not as simple and intuitive in my mind as my bb. However, retraining your brain/learning curve could very well be the case there.
Good/Pros.
Speed. In every since of the word. Browsing, app to app, photos, video, etc.
Car Dock/Navigation. I just gave my girlfriend my 5" screen TomTom and I know I won't miss it. Google Nav is not only amazing, but voice search for anything is the bomb.
Screen, wow. I was charging my phone and picked up my iPod 3 for the first time since last Friday. The screen just felt small and constricted.
I love the look, feel, weight and quality of this phone.
Call quality and clarity is the best on any phone I've used, tried or tested ever, period.
Multitasking, wow. On my car dock, I made/received phone calls yesterday, used Nav, read email (while parked for lunch/rest stop, I swear...) seamlessly and easily.
Every day I figure out something new that makes me love it just that much more.
It has a few quirks sure...but the speed and rich web/browsing experience and power of google have me absolutely blown away.