Since Microsoft extended the warranty on 360s to 3 years, I don't think it's that big of a deal to wait for them to fix the hardware issues. If yours dies, you get a free replacement and by that time it will probably have the fixed hardware.
However, I think it's probably worth waiting for the rumored
360 bundles though. They're supposed to come out this month, and it's basically the Premium and Elite versions for the same price, but you get a Forza 2 and Marvel: Ultimate Alliance included for free.