Ask twenty people and you will get 20 answers. I'm a chemist, so you would think I would have a clue which is better, but all this is proprietary formula stuff and reviews are highly subjective. Silicone "waxes" (not really wax) are quicker and easier to apply and tend to last longer. I used Black Magic on my cars for years (product of Quaker State, no longer made) with good success because it also had its own wash product that didn't remove the wax. Carnuba is claimed to be a better shine, but doesn't last as long. My guess is that it also should be removed with a cleaner before being re-applied which is perhaps not worth the effort.
So my research continues, and I'll be watching this thread until my HiChroma Red arrives in March. Thanks for those of you who have contributed. Many of the products mentioned here are not available in my part of the world -- but Amazon is your friend.