Ok - so I bought some Griots BOS Detailer at the distributer at the Carlisle show this weekend. And tried it on my 16 Ram Blue Streak Pearl. Maybe it was the humidity - but it was just "ok". It's not like the Optimum Detailer and Gloss Enhancer (my fav).
I mean, truck was pretty immaculate, just getting some dust off from driving onto the showfield. I like it fine, but I probably won't buy it again after I use up this bottle.
If there was one brand not to mix with others, my experience has been it's Optimum. I quit using their products for a while because of poor results. When I later saw a video by Yuan on how to use the Big Red Sponge, I tried using them again. After about four washes, the results improved significantly. I have noticed similar results when switching over with vehicles a couple more times.
Griot's Best of Show is a great detailer. It, or Sonax BSD, is what I would have rec'd. Maybe try it on a vehicle that doesn't have any Optimum polymers on it before you give up on it.