I've been happy with the Radio Shack XR-190 antenna's performance. I used to live in the San Francisco Bay Area and now live in the Sacramento area. This baby does a good job of picking up KICU (Ch. 36 - San Jose), KFTY (Ch. 50 - Santa Rosa), KQED (Ch. 9 - San Francisco), KNVB (Ch. 24 Chico), and KNTV (Ch. 11 - San Jose) from my new home. A few years ago, I was shocked to pick up one Fresno UHF station from here, but that was when there was a Tropospheric effect was taking place.
As for mounting the antenna up high, I've been successful in using TV masts and guy wires. You should use caution though - especially in areas with frequent high winds. If they are not properly tensioned, the whole assembly will snap at some point. There was a bad wind in the Sacramento area last January and my TV mast assembly was one of the casualties. It was snapped at about 1/3 of the way down from the top. The Radio Shack XR-190 was damaged and I replaced it with a HDTV 8-Bay antenna.