I would like to know how many chanels the tuner on this unit receives? I am looking for 188, not the 125 so many units have. This does record in stereo doesn't it? I read something about mono and using an old VCR tuner??? I have a TV w/VCR built in, can I record old vcr tapes (shows I recorded years ago) onto a DVD if i reverse the cable setup? (tv to unit instead of unit to tv) Or would it be better to have a vcr feed the unit? This seems to be the least expensive unit with a HD and no subscription is Wal-Mart the least expensive at $278 ?