After regular use, Replay TV units break. The hard drive wears out and video/sound gets blotchy. I've returned two different defective units, and still have not received a replacement EIGHT WEEKS later. They do not honor their warranty. Also check out ... (Better Business Bureau). Under "Check Out A Company", punch up Replay TV in Mountain View, CA. I'm not the only one who is having trouble getting them to fix their bad product.