I too have HR20's but don't see a need to "upgrade" to the newer HR21/22/23. While there are benefits in the newer models, like larger hard drives or that they're black instead of silver, it's not enough to make me switch. I believe the HR23 also does away with the need for BBC's but since I switched to a SWM-8 a few weeks ago I'm already there. I do like having, and I do use, my built in OTA capability with my present receivers. It's not that DirecTV doesn't have locals but there are a few stations/channels not available through DirecTV and there are the occasional storms that knock out the sat signal. Not often but it happens. I know I could get an AM-21 to hook up with one of the newer models but again I don't need that right now. To some point I guess I chase the latest and greatest with my AV equipment but not to the point where I absolutely have to have the newest model and that's kind of where I'm at with my present HD DVR's. After the SWM upgrade I'm more focused on looking at other components like speakers, Blu-ray, etc., and I'll wait out on the HD DVR's for the time being until one breaks or I see a huge leap forward in technology.