The GoWesty and BusDepot look the same to me--the same as I
had for a few years from Steve Lashley at Eurocampers:
http://www.eurocampers.com/1980--1991-Vanagon-Wind-Rain-Deflector-Set--Free-Shipping_p_623.html
He was way ahead of the others in offering these and is a source
that is way neglected IMO.

The Skylight Guy has (had) a different one that I have had
for the last couple of years and I like, but their website
seems to be dormant as they are somewhere more sunny than
BC:
http://vanagonwestfaliaparts.com/product-tag/vw-bus-card
If they show back up soon, I'd go with theirs again over the
others.

Richard