Neither, both aren't active in the DM scene ( radon left vcmp afaik ), I know you're trying to convey the fact that you're familiar with the argonath community and consider yourself proud to be part of it, but 99% of the DM community doesn't know Aky, ( and prolly doesn't give a fuck about him ) so why do you feel the need to bring them up each time you decide to post something here?
if you really want my answer on my experience with both players, then definitely it is radon.
DiaZ vs Xmair.