I've had a dual band DMR handheld for a year now and probably talked on it for about 5 minutes. It reminds me of Echolink. Not 'radio' enough for my tastes. Sounds like really bad VOIP.
The C4FM is interesting, as I am all on board with HF digital. Too bad there isn't a C4FM modem like the old AOR digital HF modem, but priced reasonably. FreeDV is fun but hardly anyone uses it.