"I've used many brands, multiple models including HP, Compaq, Sony, IBM, Toshiba, Dell, Fujitsu and Sharp. If you plan to own this laptop for more than 3 years, I recommend IBM for the following reasons:
1. Easy upgrade, unlike other brands, you do not need a lot of drivers and special software to upgrade to newer Windows and IBM has excellent support to old models. Recovery is extremely easy, only one click.
2. The best keyboard, large, solid response and the unique IBM typewriterish click. " ...
More after the jump. Matches my experience with laptops in law school.