I think the Pinnacle is the best WW as well. I like it because I'm using carnauba wax and its always nice to top it up with more. I also like it because its kind of like a "system" when you use it with the Pinnacle rinseless, which also has carnauba. Its as easy to use as UWW+ for me.
I like the BF as well, but when you consider the concentrations, its like 7x more expensive, which is absolutely crazy to me. My guess would be Ultima (4*) is who manufactures Pinnacle WW, that's why it's sort of similar (and loved) like UWW+. I can't see using a WW that's 1:4, when you can buy one that's just as good (and similarly priced) that's 1:32 or 1:44.
Its like if Pinnacle tire dressing cost $20 for 16oz, and the BF version cost $100+ for 16oz. I mean, do use less waterless wash if it's less concentrated before you mix it? No, you use the same amount. Your literally paying almost 7x more for every bottle of BF waterless wash you mix instead of Pinnacle.
The only waterless wash I've used that I really disliked was DP - that stuff is pretty bad. I also use EcoSmart RTU cut 1:1 with water. I anything requires "extra buffing" for be its EcoSmart.