I'm about to make the jump and order the base mbp online with 4gb of ram, it would be the closest to my current setup (SR 2.4 4gb) however I could wait to get the ram upgrade and just pick one up at the store tomorrow, but since they use these new Nvidia chipsets i'm having second thoughts about it. Do you guys think that cheap ram will be easily available say after christmas? or will this be rare and expensive since the new chipset is used?