We've got a Pioneer 510H here at work that we bought for transfering things to DVD. For that, it works perfectly. It's not however, a PVR. You have to manually reccord anything you want to record, and the playback interface is horrible. It's a great VCR replacement, but a horrible replaytv/tivo replacement.

YMMV, but if someone sells something with a guide service and a halfway decent interface you'd be doing much better to buy that.

Matthew