RE: G5 MONTEC vs. NAP HELLRAZOR
I would be willing to bet he put a caliper on one.
While I have not personally seen a Hellrazor I have shot it's "Big Brother" the Razor cap and found them to be generally unsatisfactory. While the point of the BH was quite sharp (from a pointyness standpoint) the blade sharpness was pretty unimpressive. Additionally I did have some issues with them spinning true.
Now that NAP owns the rights to the Razor caps I am hoping they put thier touch on the sharpness and overall quality of the design.
The Montec on the other hand I consider one of the finest shooting BHs out there. I have a BH box with just about every other head made and the Montecs are consistently my "go to" head.
It does take a little practice to get them sharp, however their flight characteristics more than make up for any extra time you put into getting them sharp.