Oh also try and stay away from cheap dells, (Since people like to support the XPS for some odd reason), HP cheap ones aren't that great either, but the business ones are usually quite decent, compaq blows... don't bother. and gateway sits right there with dell.
Toshiba isn't bad for a cheap one
Neither is Asus
Though for some odd reason, I can see an MSi fitting your needs nicely
Sony is sometimes good sometimes bad. (debatable) Either your unit works flawlessly, or you get a lemon. Not sure why Sony USA has all these hoops and everything, but Sony Canada (though having less options than USA) generally gets free fixes and repairs. (Though "retarded fixes" are charged to people who don't take care of their components. ie: You clogged up your computer with dust, they clean it out, put on new thermal paste and charge you a nice 120 dollar fee for "repairs")