I currently have a R10 Tivo receiver and am thinking about purchasing a used R16-500 receiver. I've had the R10 several years but I'm a newbie at the new technology regarding Directv. I know Tivo is old tech but I'm pleased with it. Probably because I haven't experienced what's new and truthfully I really don't need more than what I have (except for maybe a larger HDD). I just started having problems with the R10. Sorry I'm rattling, just want to give some backgroud. Anyway, my question is what difficulties/problems/pitfalls will I have in switching? Also, what are the advantages/improvements?