Got a Diamond D3000N discone antenna up on the chimney. Covers from 25 mHz up to 3 gigs.
Nothing not to like about it. Can hear as far away as NYC police in the 470 mHz area regularly, at least 4 - 5 of the NOAA wx channels, taxis in Philly, ATIS from LaGuardia, Philly Int'l airports, works decent on ADS-B, picks up APRS signals very well (I also use it for 2m xmitting), and even pick up some OTA TV with it. Even was able to receive some WEFAX from passing NOAA wx satellites and recently used it to receive xmissions from one of the ham cubesats.
Before the Diamond 3000N, used a Radio Shack discone for many years. The discone's a good, all-round omni-directional wideband antenna for my purposes.