Craig,
That has a variable answer. First off, I do not get slippage with any of the treatments. Med to large hands, and maybe I have a strong grip to boot. The above are also on different caliber pistols, 45 acp, .38s, and 9mm.
Just my personal opinion, I like the Snakeskin on the .45 acp's, Special Forces III on the .38s. I haven't shot the 5" 9mm enough to form an opinion, light recoil I didn't even notice the treatment. The 9mm commander is brand new this week. It should have a bit more with the shorter barrel, but it's still a 9mm. So I'm not expecting much difference.
I'm a .45 acp guy. Shoot them 70% of my time. 10% on the .38s, the last 20% is mixed with .380, 9mm, .40 S&W, 45 Colt, 44 mag, .460 S&W, .480 Ruger, .30 carbine, and .22
So I guess my answer for most of my shooting is the Snakeskin.