I never had much luck with the endurance stuff. I still have half a bottle on my shelf. I try it every now and then when we get new tires or just because I forget how much it doesn't work like I like it.
For me the best stuff I've found for my tires and the look I like is the Meg's hot shine. The exception is when I had my 35 mud terrains the hot shine was a little thick to get in between the lugs. For that I'd get some stuff that seemed to give the same oily look but was a little thinner. Don't know the name I got it from my local tire shop.