From my experience it is difficult to objectively quantify/qualify the best wax/treatment for your leather boots. I think a previous poster on this thread summed it up well when he said, "...whatever you use, use it often...".
Over the years I've used most everything that has been on the market. I found they all more or less worked if applied regularly.
At this point I use pine tar and bees wax, if I am on a fly in, or I do not have a heat gun, or I just want the convenience I'll just use a can of Dubbin or something along those lines.
After over a decade of use I have found the bees wax to be very good for my leather goods.