I'll be honest, I'm a little curious as to why you have ordered a GTX 480 before reviews as well. Reports suggest a 5-10% gain over the 5870 with 480 SP. If this is true, ATI will likely just release an overclocked 5870 that will beat it, like a 5890 or the 5870 2GB might come in nicely. Also if rumors are true, the REAL Fermi, the 512 SP GTX 490 (I'm just guessing on the name), should be out in a month or so after wards which is bound to give a decent boost over the pre-mentioned cards.
I'm not saying the GTX 480 won't be good, I'm saying we don't know.
As for Jenny, calm down he might have made a good decision or a bad one, it doesn't really effect you.
Edit: Dumb, dumb, dumb, if the GTX 480 sucks you can just cancel the order, but if it is good you may not be able to obtain one after it is released, I'm not sure why I didn't think of that sooner... Makes sense now.