I'm not a roamio owner yet, but something that I have on my current time warner dvr is that I can switch between the two tuners. I can rewind on one tuner all the way the beginning of the buffer and then switch to the other tuner to watch something there. Then when I switch back to the tuner I had rewound, it would stay rewound. I see with the roamio (as well as the newer TWC boxes) that when you switch tuners, you can rewind, but when you switch tuners again and then go back to the rewound tuner it doesn't stay rewound. This to me is a bit of a deal breaker, I love being able to do this and I do do this a lot. I saw an example on youtube but I can't post the link because I don't have enough posts yet. Is there a way for tivo to do something to fix this? To be able to keep the position of a rewound tuner. I hope I'm explaining myself well enough.