I looked at the Channel master tuner, it looks really nice. But instead I put a $100 Hauppauge dual tuner card in a PC. I use Windows Media Center as the DVR and to tune live TV. I already had the PC so no extra expense there.
It works great, records 2 channels at once, or watch one record another, free guide with the PC connected to the internet. I use the PC to watch Netflix, Amazon Prime Video, and any web site that streams shows.
Teaching the wife how to use it on the other hand,