Replying to Notebook help

ok so im looking into buying a new laptop. and i was looking at the vaio TZ with the 120GB Hard Drive and the macbook also with the bigger hard drive.

im kinda stuck in between, i had a toshiba satelite and it fucked up on me 3 times within one week of owning it (bought from circut city). it also had vista, and im not quite sure if im that big a fan of it, which is why i looked into the macbook. but the TZ is only 11 inches and super lightweight, and the battery life is crazy long.

i need something that is very portable, lightweight, and reliable. i haven't really heard much about vaio's with the exception of my friend, who dropped his in the hot tub one night...

i would mainly use it for surfing the web, typing docs, managing business plans, and lots and lots of music. i travel realy frequently for work, like once or twice a month, in and out of the country, and lots of road trips. so battery life is key.

i need some advice, what do you guys think? macbook 13 inch? or the tz 11 inch?