The CM422 is one big ugly antenna with a big electro galvanized screen made from a farmer's fence. I've seen many rusted old ones.
Like Boba said, I am fortunate in my DMA that the Sensar works great, since most channels are within 40 degrees in one direction. The signals have improved so much in the last few years that we are now using the unamplified model with great success.
Forget what you heard that UHF is all you'll need. Orignally, all OTA HD was to migrate to UHF. Not true, NOW! OTA is giving up UHF channels 51-69. So, after Feb 17, 2009, a lot of UHF HD will migrate back to VHF.
So, unless you want a short term answer to OTA, don't overlook VHF capability. Dealers and installers don't care. It means MORE business for them.