The radios are meant to be used with numbered and labeled favorites list using a quick key so you can enable and disable favorites list easily.
That's why your survey will probably be 100% to 0 LOL. Searching the database can be fun in a new area if you put it on 5 Mile range which actually gives you a lot more range than actually five miles the way systems are set up. You can eliminate certain Service types unless you enjoy school buses, taxi cabs and oil delivery trucks
I personally like to listen to very little... specific objects that are pertinent to what I'm looking to follow and eliminate any unnecessary stuff. Remember the saying... The more you scan, the less you hear.
If you need to follow a lot of things then you use multiple scanners.