Thanks for all the info.If budget is an issue you might try the Uniden BC346XT Portable, Uniden BCT15X Desktop and the new RadioShack iSCAN portable all will track Denver's ESK system for 1/2 the price of a Pro-96/2096.
Additionally don't forget Bill's excellent online feed sharing Denver Police, Fire and EMS traffic worldwide.
For Denver/Westy/Arvada the above scanners would work fine but of you add Adams County to the mix they are DTRS and use some 700MHz control channels so then your radio list would be Pro-106/197, Uniden 396/996 and GRE-500/600.Thanks for all the info.
Which radio will allow me to listen to all of Denver/Westy/Arvada/Adams county? It would be nice to have one radio for all of them if possible.