BFG, XFX and eVGA offer a life time warrantee also I believe. Plus there just good cards if you go with one of those. One thing though, the eVGA have the step up program. So if within 3 months if you want to stepup to another better card, they will give you your "FULL" ammount you paid for whatever current card you have. You just give them your copy of the receipt.
I got lucky and got my $460 out of my 7800GTX and I kept it for 6 months because there wasn't any of the 512's available for me to step up to and when the 7900GTX came out I got that card for just $30 more.
Just an option if you think you will upgrade in the next 3 months MAYBE.