I always use CNet to compare phones.
Compare Apple iPhone - 4GB (AT&T) to Smart phones. Comparisons by CNET.
My roommate has an iPhone and I don't really like it. I don't know if he's retarded if it's not possible but he can't send or receive MMS messages. When he gets one, it's a SMS with a link to the picture. He has to email pictures to send them. I tried typing on it once and really didn't like it. The images to touch are small and when you touch a letter the images gets bigger. I don't think my fingers are too big but I hit a lot of letters that weren't the ones I wanted.