The antenna I bought is a little better than my coat hanger antenna so I just use the new one. For CBS, I put a couple of marks to rotate to as CBS (vhf) is the only channel that needs it's own position.
I think in my case (indoor, window only facing one direction, can't mount on roof) there's really no getting around the multi-path interference (unless the train line stops, which I don't see happening
Overall, though not perfect, I'm quite happy with my antenna and new OTA DVR. It's so nice to just press a button to pause live tv and to skip commercials with few presses of a skip forward button.
The funny thing is I schedule programs to record the old fashioned way like an old VCR (start day, start time, end time) and I love it, simple and old school. I really don't miss the on screen programming too much. I do peek at tvguide.com on my computer to see what programs are airing from time to time.
If one could invent something to filter out the multi-path interference for indoor antennas, one could strike it rich. Just a thought.