So I'm thinking about getting TiVo service, but pretty new to the whole thing. I don't know anyone with TiVo, so I've never used the service before but everytime I happen to talk to someone that has it, they gush about how much they love TiVo. Anyone here got any advice for me about choice of receivers (DirecTV)? Should I buy the "lifetime" service agreement or pay-per-month? What about Ultimate TV? Is it better/worse/the same as TiVo? I appreciate any feedback.