I have never used Kenton’s products, but I do have Stoney Point knobs on a 4.5-14 VariX-III and a 2-7 VX-2. They don’t have tier 1 tactical scope feel, but they work out to reasonable hunting ranges. I think the Kenton knobs are little nicer. I wish Kenton still made knobs for 1st gen Zeiss Conquest scopes; they don’t make them anymore and I need a couple. I keep scouring eBay for used ones, but I haven’t found any yet.
I recommend giving them a try if your application is hunting; if it’s competition, I would buy a new scope.