My brother want to go to a Mac Book from a PC. Apple folks are telling him the Mac Book which comes with 1 gig of memory is all he needs; doesn't need 2 gigs for photo processing. Assume he will be processing RAWs; would you agree? 2nd question. Would you tell him to buy Aperture or use Nikon Capture and a PS program like Elements? Thanks for any advise I can pass along.