i am one of the others using a new old stock channel master monitenna found on ebay.allthough you could call it the scantennas dad as it is very similar.i attached a link below it is the second one. http://www.starkelectronic.com/scanner.htm
Depends what you want as discussed many times over in this forum. For me its the Radioshack Mag Mount and an AT-256. This combo gets me all the VHF/UHF and 800-900 systems I monitor. OBTW I have tried the 20-176, and the other 73 dollar discone from RS. My current combo is a "get ir dun" setup.