How does the choice of phone manufacturer affect the Android experience?
I ask because I've got an Incredible, and it looks like almost every basic phone function happens through an HTC-specific app (Contacts, SMS, clock, weather, etc). I don't have a lot of experience on other Android phones, but I assume that this still affects the final user experience on the phone even when all hardware specs and Android version are the same. What features are unique to HTC, Motorola, et al?
:edit:
For example, I think HTC phones are the only ones with a curved bar at the bottom of the screen with the big "Phone" button in the middle, and I prefer that over the more squared off buttons I've seen on other phones. Maybe this is a moot point... could I get a Droid X and make it look and behave the same way?