^ is a good idea.
I've been scanning the repeaters nearby and really there are only two repeater (systems) that get "a lot" of traffic, and "a lot" is pushing it. There's more when they're needed for Skywarn but otherwise a lot are just sitting there idle... I rarely hear any activity on the 2m repeaters around here other than Colorado Connection (probably not good to share that one, and you should have a linked CC repeater nearby too!), and there's like only one 70cm that's active. There's a secondary 70cm that seems to be used by two people most often if not Skywarn.
(Note: though they may not get much traffic, people do monitor them.)
I don't know about the digital repeaters however, as I do not own a digital capable radio. They may be used more often? I have no idea...