This is a very complete scanner with lots of capabilities. It is the flagship scanner of Uniden. This is the main scanner I use for monitoring public safety, coast guard, and air bands.
This is the older version of the Uniden flagship scanner. Still very capable.
Airnav Radarbox ADS-B decoder
This receiver decodes the ADS-B (Automatic Dependent Surveilance Broadcast) from commercial airplanes. You are able to see the flight information and position of the aircraft in real time. With the antenna I built (shown below), I am able to see most of the commercial aircraft in Atlantic Canada, part of the US and Quebec.