Hi all, I'm considering getting either the 12 or 15 inch PB. If I get 12" PB, I'll want to upgrade it. By the time I'll upgrade the 12" PB (memory, wireless networking, etc) I'll be closer to $2100 mark. However, for an extra $500 I can have a machine with bigger harddrive, bigger screen, better graphics card, faster memory, faster processor, etc. It seems that the 15" PB is a better deal than the 12" PB. The only reason that I haven't settled on the 15" PB is that it seems to be rather big, and I want a laptop that will be mobile. For all those 15" PB owner, have you experienced any inconvinience carrying your PBs around? Did you wish you had a 12" PB?