Moxi actually released a product? I had no idea. I thought they were the kings of vaporware.
In any case, why is Tivo "limiting?" I've had my DirecTV Tivo boxes now for at least 7 years and I'll never get anything else. They are still SD, unfortunately, but hopefully DTV's renewal of working with Tivo will produce a dual tuner HD DirecTivo soon.
In any case, the existing Tivo boxes are good as they are for cable. What's wrong with them?
Steve