HD not in that budget. Check Sony, Panasonic, Sanyo and Sylvania. Buy the one that has the best picture and feature set that you need. Check Consumer Reports for recommendations.
David: at 300-400 you wil not get HD and at 4 feet away you need HD or you will see alot of snow and movement in the picture. Buy a 4:3 standard TV that is HD ready it will cost more like 600-700