I just purchased as PRO-164 and was hoping to be able to trunk track in the Central Denver area. However... Denver Public Safety AND Lakewood both use EDACS w/ ESK. The ESK part completely screws up everything so I can still listen but I am not able to track any conversations, which is the whole reason I bought a trunking scanner in the first place (and the PRO-164 is a huge pain to program). I am looking for the most affordable scanner (preferably handheld, but base or mobile will work) that can decode ESK and maybe comes with a manual that actually EXPLAINS how to program it. The cheapest I have found is the GRE PSR-500 and that runs $450!! I guess you have to pay for new technology though. Any suggestions would be of great help. Thanx!!!