Help Me Buy My M1730 PLEASE, I need help buying my new laptop but what to get in it?

Ok so im going to buy my M1730 some time next week BUT what do i get in it??

i was looking at

Intel® Core™ 2 Duo Processor T8300 (2.40 GHz, 800 MHz FSB, 3 MB L2 cache
4096MB 667MHz Dual Channel DDR2 SDRAM [2x2048]
DUAL SLI 512MB NVIDIA® GeForce® 8800GTX card

but seeing and Dell are giving you the 9800GT at the same price what one would be best for playing games ??

8800GTX's OR 9800GT'S??

Thanks

Hi i have read that the 9800gts arnt as good as the 8800gtx, the 8800gtx are 150% more powerfull than the 8700m sli, and the 9800gtx are 5-10% more powerfull than the 8800gtx. dell no-longer offer the 9800gtx this could be to do with overheating or something.