I have the Natty's Red and I have compared it directly to Collinite 845 (aka IW), Collinite 476S, and FK1 1000P. To maintain some continuity in testing, I applied all of the above mentioned waxes applied over Klasse Sealant Glaze (KSG) at the same time on different panels of my car.
I'll echo similar comments made previously about the Natty's Red - it is easy to apply/remove, has a very nice look, you can apply it in sunlight, and smells pleasant. I have little to complain about it in terms of it's look, but the durability of it leaves a bit to be desired - after 3 weeks in Pacific Northwest/West Coast Canada weather (cool with lots of rain), the beading has diminished perhaps around 30% since first applied. There is still protection present but it would not be something I would categorize as "long lasting." I would rate the durability of Natty's Red at the bottom of those waxes I tested...