Sorry to just get back to you now...
146.760- 141.3 tone W9AIU is very active. Also the ERC's other repeater is good 146.790- 127.3 tone.
The Missouri Digital Group's DMR repeater is gaining a lot of activity recently:
Missouri Digital Group
Also they have a VHF and UHF DSTAR repeater but not too active.
224.980- 141.3 tone is most active 220 repeater
442.900+ 123.0 tone and 442.875+ 141.3 tone are good on 440 but not much activity. 443.475+ 77.0 tone and 444.250+ 103.5 tone are linked and you can usually find someone to talk to on there.