I currently have Infuse 4g, and came from iPhone 4. Great phone, android is super easy to use. I was worried about the size of the phone, but it is a lot lighter than the iBrick. It fits in all of my pockets (not huge over-sized cargo shorts pockets, but regular size clothing) When you get the phone, I suggest you head on over to xda-dev and have a look around for more fun. It's nice to have a phone that you can remove the battery, replace microsd card. Have control over your rom. can customize to your liking, and not rely on the IOS devs to tell you how you should use your phone. The devs over at XDA, give you several choices, and they all are free and are developed by people not handcuffed by the phones manufacturer. I will never own another IOS product. I started with original iPhone. For all the people saying you can just jailbreak it, I did that as well from the beginning. Apple is always concerned with that cat and mouse game, rather than concentrating on customer feedback. It is funny to me, when they release new hardware and basically tell their "LOYAL" followers to just get the new thing, we know you just overpaid for the previous thing 6 months ago, but you need this new thing to stay popular among all of your friends. I wish people would wake up out of this Apple "CLOUD" yes pun intended.......
Wow I did not intend for this to be a rant. Sorry.
Infuse is a great phone. I wanted to wait for the Galaxy S2, but not sure when it was coming so jumped on the infuse. I got mine from Costco, due to there 90 day return policy even on cell-phones. So I figure if the GS2 comes out before that time, I may switch, but I do like this phone a lot. My battery life, after heading over to XDA-Dev is awesome. I haven't charged it in 48 hrs. and I use it alot. It sits now at 65%. WOW