If you use Edge everyday like I do it won't be that bad. I think it is just fine for a mobile application. If you haven't used Edge you might be apt to complain. Either way I am getting this bad boy on day one!
people seem to forget that AT&T double the throughput of EDGE for iPhone's release. I spoke to a businesss rep and she spoke to a Tier3 data support person who confirmed this. Even EDGE before was not that bad. It is not EVDO, but it is still decent.
EDGE wifi combo just fine...If you HAVE to have 3g or somehow feel shorted then I guess its your prerogative if it hurts you for some uses. For me however its purrrfect and is gonna purrrr EDGE and Wifi till i feel(yawn) like upgrading in Jan/Feb