Please help a novice who is trying to figure out what to buy! We have Comcast and I got the box for Comcast DVR, but after a couple of weeks my husband disconnected it in frustration because (1) if I was recording something he couldn't watch something else (I didn't know at the time what a "single tuner/double tuner" issue was; and (2) half the time we couldn't figure out how to turn it on and get where we wanted to be. It was truly frustrating, but I am conviced I would like a device like TiVo. However, if it has only a single tuner it seems we will have the same problem with TiVo of not being able to record one program and watch another at the same time. So, what should I buy that gives me the TiVo experience I keep hearing is so great, but lets us record and watch different things at the same time? Thanks in advance for any advice you can give me. I don't understand half the things on this website except that there are a lot of people on here smarter than I am so I figure if anyone can help, you guys can!