I'm about to make my switch from cable to DSS--namely, DirecTV with the six month free Showtime offer. But who is offering the best equipment/price? Radio Shack is offering free two-room w/ installation after all applicable rebates. They use RCA brand. Circuit City's price, however, is $99.99 after rebates. But what brand equipment do they offer, and is it better and therefore worth the cost? Any place else I should be considering?