Unfortunately, Guncoat isn't as scratch resistant, chemical resistant, or superior in any other test there is, compared to CERAKOTE. This is why every major manufacturer has a line of their firearms CERAKOTED.
Everyone is entitled to their opinion, but one thing to consider is that Cerakote has always had a MASSIVE marketing budget, that's why their name is
everywhere, and it's easy to believe that it is superior when they bombard you with their slogans.
KG gunkote is a family owned business that cant spend millions in advertising. Stemming from automotive coatings and lubricants, their chemical engineers come up with some ingenious formulas. not just paint but gun care products also.
KG Gunkote is thinner (0.0005", 5 ten thousandths), tougher and more flexible in all colours.
I had an M14 come in that was FDE in Cerakote and the paint was coming off like it was krylon. At first I suspected prep work was the culprit but the rifle was painted by a reputable gunsmith, actually one that was mentioned in this thread already, so the job was done right, it was the product that failed. I refinished it in KG and the finish has held up through 100's of rounds more than when it came in without a hiccup.
If you plan on flexing your firearm, KG can flex 180 degrees, their product has a higher than 9 pencil hardness in all colours and ive tried submerging it in laquer thinner and acetone with no degradation, not sure what chemicals you plan on using on your firearm but these are extremely harsh.