I've had my Toshiba laptop since I bought it last March, I never had problems technically (except for the virus problem back in Sept.), and when my AC Adapter broke, the representatives were very nice (by phone) in showing me which adapter was compatible with my laptop.
I heard HPs and DELLs are bad, and I was told to stay away from them. I'm thinking of buying another laptop soon, so I'm still sticking with Toshiba.