Before you head to your local radio shop I might suggest CES. These people carry a pretty good selection of radio equipment which is intended to do the job but not break your pocket book. So unless you want top of the line don't blow your money on a motorola radio dealer...
RELM makes an excellent radio. First off you need to know what your requirements are.
Are you using VHF-HI? UHF? 800mHz? Conventional or Trunking? Does the agencies you want to communicate with use APCO25 or Analog? These are just some of the things you really need to consider before you can even begin to shop...
But let's assume you're using VHF-Hi conventional. RELM or BK Radio makes some good choices. For example here is the link to a RELM VHF radio that is 99 channels, scan, alphanumeric display, 2-tone decode for paging systems, 5 watts, priority scan, PL and DPL, rapid desktop charger, windows programmable, supports narrowband and wideband FM modes. $259.95
http://www.usascan.com/files/RPV599APLUS.html
This unit is programmed via a special cable and software on a windows based PC. I might add that Motorola will not release their programming software. So if you buy one of their radios you're forced to get it programmed or modified at an authorized dealer. RELM and BK will sell you the cable and software at a reasonable cost. The radio above was specifically indended for public safety users.
For more radios go look:
http://www.usascan.com see under 2-way transceivers.