Other than 2 extra screens and slight formatting appearance differences of some apps, not sure I'd notice. But ... Still no flash, VERY few apps will load to SD - thought all would be my choice, have to use ATK MORE now to kill UNRELATED apps that non-sensically, randomly run in background, Blink keeps saying memory low but same 64 apps (in fact deleted 5 big ones) - of course 10 of them I can't get rid of since I'm not rooted, EVO keyboard no longer runs, don't like that I have to X out of car mode vs using "back" key, camera to gallery still slow (hours at times), good thing is yahoo notifications working again which were lost in 2.1 .... but despite all I still LOVE my motodroid1.
Your task killer is the issue here. Stop using that crap.