I have a good few of the boards on this list. I literally won't buy a board now until it's supported by Armbian, at least as a proof of concept. I can't say enough nice things about the Pine64, it's beefy and cheap, and I'm using it as an SDR server as it seems to handle the audio streaming over my network without drop or buffering issues. I have a 3 year old CubieTruck that is a server to my S.O.'s SDR for the same purpose. The cubietruck hardware wise has been really solid, still running from nand, tho I did finally wear out my older cubietruck with excessive flashing, it still runs like a champ from a class 10 microsd. The Pine64 has great vendor support so far and the cubietruck is getting "long in the tooth" but most of the issues are known and fixable and pretty well documented depending on what you're using it for.
Good luck!
