Right, I'm sure you understand the limitations of the radio. It's not a scanner, and they tend to scan much slower than one, especially if you have a lot of channels in the scan list. But you'll get it to do what you want.
I've got a CDM-1550 in my personal truck. It works fine for what I need, but I'm thinking of replacing it in the near future with something a bit more modern. I'm trying to decide between dropping the coin to get a 3720, or waiting a bit longer and grabbing hold of some stuff I'll be retiring at work. I do like the NX-3000 series radios, but pulling retired gear that is in good condition always appeals to my cheap side.