I've been running a Philips 3575H DVR/DVD Recorder since 2007. It's been a good unit and still functions fine, but I'd like to upgrade to something that records in HD and can be streamed to any device. I've used those $30 DVR boxes, and they seem to glitch up during a recording. Is there anyone here who uses a Tablo unit? What's your experience with it? I live between two markets. My understanding is that it requires a ZIP code for the guide data. If one of the channels you receive isn't from your main market, will the guide data recognize that channel or will it be blank instead?