I know the main differences are the 90GB in hard drive space and the Dual Layer DVD as well as the .3ghz x 2 in processor speed. Question is if the old new 2.0 is $1,899 and the new 2.3 is $2,499 - I am thinking that the old New 2.0 is a better bet when taking the $ savings and pumping up the RAM and addin a better video card and additional hard drive. I am thinking that I could always add a dual layer DVD later or bettr type. I guess what I am asking is if spending $2500 - where is the $$ better spent? On maxing the 2.0 or the base 2.3?