I'm looking for an answer to this too. I'd like to stay with OTA for now too. Whenever I have access to cable, I spend more time channel surfing then watching a show.
I assume the new non-HD VCRs with digital tuners will record the digital channels, and convert them to SD for recording and playback on standard VCR tape. Is that how it works? Less then ideal, but still a way to timeshift an occasional program.