I have recently bought a Samsung 710MP from Staples, it has a TV tuner, RGB scart, S-Video, composite and a PC input. It all works well but I have a few questions please. Are there any fundamental difference in picture quality between what I would catagorize as TV based models as such sold along side other tellies in, for e.g. Dixons and the Samsung as I bought in Staples? I didn't do much research and assume that they are all pretty much the same in principle, it is just strange that £270 seems quite cheap versus a TV type one.