Anyone else use Durashine?

[palidin]

I've used it for years on my cars. Its not nearly as much work and leaves a great shine. It can also be applied as you're washing the car, rather than having to wash, dry, then "wax on... wax off." Much less work.
Durashine advertises a "sheeting action" for a wash/wax that doesn't require hand-drying. While that may be true to some extent, I always hand dry the car for a perfect look.
Durashine also claims that paste wax separates on a microscopic level below freezine and leaves portions of the paint unprotected in winter weather.
Anyone know of any negative effects of using this polish?