After a day of heavy use, I'm completely in love. The included headphones actually work pretty well for calls, and people say I sound better/clearer than my beloved old phone, the SE 810. The screen looks great in bright sun, or complete darkness, and everything in between. Like the reviews say, if you go into a location with wifi -say, a cafe - it'll tell you, then offer to connect. Connect once, and it'll always switch to that wifi when you are near. Pretty sweet. EDGE wasn't that bad - it's usable, but you'll definitely notice Wifi. The speed upgrade of EDGE definitely makes a difference.
I got plenty of people saying "ohhhh" when I used it around NYC. One old woman - I would guess 70 - says to me, "oh is that the iphone? How is it?" So I tell her a bit, but not much, thinking what does a 70 year old woman care about an iphone? Then she says, "if it was 3g, I'd have bought it. At least it has wifi." I must say, I was pretty shocked to hear a 70 year old woman talking about 3g and wifi.