Bad product or bad luck

I bought this unit 2 months ago and have had problems with it. Although easy to use, the first unit I had had difficulty with dark still images; little white horizontal lines appeared. The unit was incredibly slow to respond to commands from the remote. It was returned to Sony and Sony performed a firmware update. Obviously, not diagnostic was done, same problem occured. The store changed the unit. Just recently, the remote stopped working. I have to go replace it. The Sony PSP3 works better, remote action works better. Ahhh I wish Toshiba had won the high definition disc war.