lower doesnt mean better, some shops are getting faulty tuners and faulty fans and so on, and when you ring them up they start to try and fob you off, so cheaper is not always the way, then reliability is the way i look at, if the shop wants to help and resolve the problem, if there is a problem to start with, tm800hd a good clone is supposed to be very good, no problems at all, but vu+ run the show for me, ask anyone who ownes a vu+ how good they are,