I came from a Blackberry Tour 9630. I really like the speed and browser on the Droid but I miss the BlackBerry a lot. Blackberry has true multitasking, some I have come to realize Android lacks as I use the Incredible. For example, I was copying and pasting a doctor's info from the browser to the contacts. I copied his name and went back to the browser to get the number and when I went back to contacts it had left the screen where I was making the contact and didn't save! The Blackberry also has much better copy and paste. Copy and Paste doesn't work everywhere in Android, like Gmail and the SMS application.... those are two places it should work the best! I also miss the keyboard on my Blackberry and the ability to use the keyboard for shortcuts, like "b" for browser. I miss the dedicated phone / hangup buttons, I miss the volume rocker for changing songs, I miss the phone app (sense's phone app is retarded....). Mostly I miss my BB! What I don't miss is RIM constantly releasing phones with outdated components.... yes I understand that Blackberry's aren't for gaming... but my Tour used to freeze up when typing a message. Put a Snapdragon in a Blackberry and downclock it!
What I like about Android is its full html email support, no download / attachment limit, speed, apps, and browser. But I will run back to Blackberry if they can fix those things.