I have a Marantz/Superscope Pro grade Burner (CDR-500) tht has two Philips transports in it. It is less than six months old. It has been flaky from day one, sometimes "chattering" or adding "scratching" sounds during playback. A few days ago it began a new ailment. It will record a CD, but refuses to "finalize" the disc. I called the service department and was told that more than likely they could repair the problem, but replacement of the defective transport was out of question as none were available(!) and the service charge may be as high as $350.00! This is half the price of the machine! Needless to say, I am now avoiding purchasing ANYTHING that has Philips componentry in it.