I've only had my iMac for a few hours but it's a great computer so far. Since I'm a windows user, its a little different for me (but still great. This keyboard needs some getting used too though.) So far my only complaint is the Caps Lock key on the keyboard. Unlike most people who press shift and hold down the letter they want capital, I quickly press capslock on and off. I can't do this anymore, because while most of the time it responds fast, other times it'll take a second or two to respond. Ignoring that though, I'm enjoying my new iMac and OS X and I can't wait for Leopard to come out. Just for those people aren't sure wether to get this system or not - GET IT.