I'm starting to save up to add an internal HD to my Dual 1.42 MDD... My internal + 2 FW externals add up to 325 Gigs of space - but that doesn't seem to be enough (I'm really surprised). I would love to use this as an opportunity to speed up my system. Any recommendations for a reliable and fast Hard Drive that will fit into my Mac? Is there a website that will show me what options exist for my particular system? Thanks!