unless you are absolutely pressed for cash(make sure to budget at most 100 quid for 4 gigs of ram) simply because the resale value will probably more than make up for the difference in a few years when you are ready to trade up for something better. That combo drive will be a resale value killer imo.
Meh, not everyone is focused on resale; For me, I run it into the ground, get what ever cash I can get from it in 2-3 years, then sell it, and take what ever money is offered.