I have a couple of evoke flow radios. They're fine. Evoke Flow F3.
Happy to offer tech support, if you want it.
The reason for using the Pure servers is that there are very many internet stations out there, many of which use different streaming formats. Pure aims to make it easy to access them simply by using the tuning dial.
I have another internet radio on my media Amp (a Yamaha) which has an even more complex system, requiring an account with some other internet radio system - vTuner, I think.
The Pure does sometimes take a while to connect to my wifi, and occasionally just freezes, but in general, I like it very much