I had an HP in college, and I liked it at first, but it required a lot of maintenance. I had to take it in and get something fixed or replaced every few months.

I'd never been a fan of Dell before, but I have a Dell right now and I'm actually really happy with it. I've had it nearly a year, and not had any issues with it.

Never used a Toshiba, but I've heard lots of good things about it. It's supposed to be the most reliable of the 'cheaper' brands.