I have the QL2500U2 from Kee Electronics. It worked fantastic for two months. Yesterday it stopped working and kept locking up the machine. I emailed Kee today and they informed me that their is only a 7 day warranty. He did offer to ship another one for free if I bought it. I don't know if I got a lemon or if it is a bad design. It is really unfortunate, I really liked the unit.