This shit is hot right now. I'm really surprised at how well Meguiars held up to the torture test vs the others. The Adam's coating is quite a bit more expensive than the other 2, but aside from superior beading I didn't see much out of it that warrants the extra cost over the other 2.
https://www.youtube.com/watch?v=wQZgl8CR6o0
https://www.youtube.com/watch?v=wQZgl8CR6o0