Some good police scanners are the Uniden Bearcat and HomePatrol, Radio Shack PRO and Whistler models. Police scanners fall into desktop, base/mobile, and portable or handheld categories that can receive analog, trunked and phase 1 and 2 digital signal formats. Phase 2 digital scanners pick up all signal formats.
The phase 2 digital signal format is the most versatile and is the communication standard toward which all communities are moving. The Uniden HomePatrol 2, Uniden Bearcat BCD996P2, Radio Shack PRO-652, and Whistler WS1095 are examples of good base/mobile scanners with phase 2 digital scanning capability. The Uniden Bearcat BCD436HP, RadioShack PRO-651 and Whistler WS1080 are examples of good portable phase 2 digital scanners.