I am thinking of purchasing a DVD burner and am looking at 2 or 3 of them. Any opinions? I am looking at the TDK 440+DED. Any opinions? I need an external burner, and like the Plextor PX-504UF model also, but need to buy locally, and have been unable to locate one in the Dallas area. Sony DRX-510UL is a little rich for my blood.