SONY VS. IBM ( THINKPAD)

Been meaning to get a new laptop and we spent some time over the weekend browsing. I must admit that I have never been good at understanding the technical jargon and so as expected, the computer hardware, configurations, and such just makes absolutely no sense what-so-ever to me. BUT, one thing is for sure, I do know that I want a light and ultra portable laptop. =)

Currently, my heart says Sony Vaios TX Series(metallic cooper) OR Fujitsu Lifebook Q Series(pure white) but my mind screams IBM Thinkpad X60 or anything else equally practical as for the same amount I get twice the RAM and more run! Should I follow my heart or listen to my head??