I have a blued PF-9 and am considering having the slide coated. Several people have done the HC through various places, but I would like to know if it is the best coating for this gun. Are there other coatings that are functionally better with the mechanics and mating surfaces? I would like to have a couple of these guns and mod them, so I would lkke to keep costs low. That way, I can make trigger mods, etc., and not be over-extended in the money into it. Thanks.