The UNIX zealot who raves about the robustness of LINUX shows a pattern of narrow thinking.
In the Chicago market you can't even buy Tivo HD Recievers for DirecTV anymore from the major retail outlets. UltimateTV, on the other hand remains in full supply.
I've played with both services extensively and both have their merits. The nod probably goes to TIVO for completeness of UI, but with the major retailors abandoning Tivo recievers in favor of UTV, I went with Microsoft, who I know will be around long after TIVO is dead or had been bought. Haven't had a problem with it either.
The fact that UTV receivers have 2 USB ports that will one day be enabled gives me hope that broadband Interent seamlessly presented on my TV will be shortly coming. Since the TIVO devices lack such ports, upgrading hardware will be the only solution. Too bad for the zealots blinded by OS religion. Tivo is nice, but will it last?