Both bricks!
Depends if you are going to carry it around (ie. nightstops etc) ...
I've just ordered a Sony Vaio SZ1XP dual core, very light 1.7Kg, very well spec'd and performance and battery life, but off course the price is a 13.3" screen ...
http://www.vnunet.com/personal-compu...sony-vgn-sz1xp