My city is on 700MHz P25 which requires a fairly pricey radio, but its been worth every penny over the past week. After listening in last Saturday we cancelled a trip to visit family after hearing about a riot on the local highway.
Make sure to look up the frequency your town uses first before dropping so much coin on a radio. If your local LE is encrypted, you're out of luck. But many aren't.
I've been thinking about upgrading to an ICOM IC-R30, but its expensive and does way more than just police scanning.