OK, so comcast is screwing me over, and I've decided I'm likely going to go with DirecTV (mainly because of Sunday Ticket) . I've been reading some reviews of the DVR on the web, and many are saying the DVR is buggy, and the TIVO was much better, etc., etc. I use forums alot..and I know this is a forum "sin" because i should use the search feature...but.... I just want some general information. 1. Can I buy a used Tivo for DirecTV and use it for a new service agreement? 2. Have most of the bugs been worked out with recording, etc? 3. If you had your choice, Tivo or the HR20, which would it be (and why if you please)? Thanks! PS - also, I'm a computer network engineer, so if anybody has networking problems and there's nobody else here who knows that stuff, I'd be happy to help.