I liked Garfield better in the first movie. Pete was too mopey throughout ASM2.
To fit Spidey into the MCU I'm sure it'll be explained he was bit by the spider around the time the Chitauri invaded which is why he missed that battle. I wanted Logan Lerman in the role last time around but it went to Garfield. He was pretty good in Fury and his character wasn't too far off from what Peter should be. Not a soldier, just a typist nerd that was thrown in over his head among the big boys. Being a nerd or awkward doesn't mean looking a certain way so I don't want them to cast along those lines. Ultimately it should go to who can rattle off witty quips better as apparently Marvel is gonna focus more on Peter being Spidey over Peter in relationships, if the article I read is to be believed, which is exactly how I want it.