My fundamental test of a cellphone is "how does it work as a phone?" For my HTC One Dev Edition, the answer is "not very well". The radio reception is kind of terrible. Worse yet, it doesn't seem to roam properly: I find myself rebooting it so that it will connect to a local network.
There are a lot of nice things about this phone, but I'm going to try Cyanogen on it RSN and see if it fixes some of the radio problems. Failing that, I'll probably give up on it and figure out how to get something with a better radio. (B)