I was wondering which hp model laptop is better, my previous hp was a dv2000 pavillion 2gb ram, 160gb hdd 1.6duo core intel centirno 14"screen, my current model is the hp buisness notebook 6730b 2.26 duo core intel centrino2, 4gb ram, 160 hdd, 15.4"screen. i have had a few hp pavillions but this...