Sheesh, I go away for a while and too many posts to reply to individually. But yes I have tried the NX01 now, and it does give a large even hoptspot with the four corners of the grids at the edges of the circle, but the NX-05 is actually just the slightest bit "hotter" in the center with a dimmer outside. The NX-01 will give the more evenly "hotspotted" entire area though, if you need that sort of beam pattern.
I did try the Fraen 6 degree lens, about the same as the stock NX-05. Actually Wayne's 30mm is probably the best optic, but I don't want to turn this slim little beauty into a mini Turbohead just yet.