[Power_user_EX]

If u will not be updgrading for 4 yrs then don't wait for nehalem.
Go for 9300 or 6600 with p5q pro.
Palit / sapphire HD4850 is a good choice.

DDR 3 , X58 , Nehalem-i7 are new technologies - we must give them some time to mature as mainstreams.
Also the cost will be out of reach for most of us at the beginning of its launch.
For e.g DDR3 reaches speeds of 2000Mhz but with poor latencies of 8 or 9 which nullifies the high speed of DDR3. DDR3 improvements will be seen in near future but not now.