The downside to recording OTA is that it will take up twice as much space on your hard drive as recording from the satellite would. OTA is MPEG2 and satellite is MPEG4.
It doesn't help when the station broadcasts out of your area. MyNetwork is the only local that doesn't broadcast in HD on D* for me and it annoys the hell out of me. Going from RAW HD to Smackdown! SD is almost torturous.If you have an OTA you can get it in HD on 50-1
I would recommend a Channel Master 4228.