The WS HD was out at the time I got the Audi but I decided against coupling it with the regular WS ( i.e. getting BOTH
WS covers) because the WS over the Noah works so well for my gf.
On the occasions I use the covers and it rains, a good shake of the WS by itself, while the Noah is still on the car untouched by overly saturating moisture, gets it nice and dry. I'm also sorta under the impression that the WS HD may be more bulky than the Noah
He he, ifanother fabirc comes along that I find more intriguing I'm definitely all ears