boltjames: you type in absolutes. To the contrary, I had the HR20 for about a month and had to reinstall my HR10. Now my HR20 is a nice compliment to my HR10 but not a replacement.
I realize that a nice UI is important to some, but the primary role of a DVR is not to amaze and astonish power users with customizable menus and functions. The primary role of a DVR is to display a gorgeous MPEG4 HD picture and record programs reliably for millions of subscribers.
If your HR20 did not succeed in these two areas, you need to get a replacement HR20 from D* as yours is defective.
If you feel that the Tivo UI is so much to your liking that you are going to forgo dozens of incremental HD channels, MPEG4 picture quality, native mode picture quality, and constant updates from the manufacturer then your loyalty to Tivo clouds your judgement to a point where your opinion is skewed.
There are many people who prefer a horse to a car for daily transportation. That choice is completely within their right, of course, but it doesn't mean that their decision is correct.