Well I am close to getting the Quad (2.8) 2010 model. I think I will get the base model (3GB) and add a 2x4GB Crucial kit. My question is this - is there any hit for keeping 2 x 1GB and putting the 2x4GB in (10GB Total)? My uses are VM (XP for Corel Draw only) and CS5 in the mac side. I also need to do a lot of handbrake to convert my divx encodes to a more mac friendly format. I may also bootcamp it for a bit of gaming but not too often. Any advice here would be good chaps and chapessess..... edit: My other option is to go for the 12GB (4GB x3) kit from crucial - any performance diff over the 2x4GB + 2x1GB ?