How is the recording quality on Sony's Tivo's? For example, is it VHS quality or better than VHS quality (which I'm hoping it is)? How much can I expect to spend on a good to great-quality Tivo? What are the standard features that I should look for when buying a Tivo? Can they output to tape or other recording format? Do I need a subscription service in order to activate the Tivo or can I record from any cable/satellite source? Please forgive all the questions. I'm new to the Tivo thing.