From my research I came to these conclusions:
OEM BMW
Pros:
Seems to be the most secure (as parts are screwed in),
looks very nice (IMO)
Covers everywhere
Cons:
Bit complicated to install
Expensive
Just Roadster
(
http://www.justroadster.com/products...r_z4_2010.html)
Pros:
Cheap
Covers everywhere
Easy to install
Cons:
Looks a little 'cheap' with the plastic scrap vs. the BMW one
May not be as secure as the BWM one at high speeds
(I'd love closer pictures, the ones on the site are small resolution)
Roadster Solutions
http://www.roadstersolutions.com/page69.html
Pros:
Cheap (compared to BMW)
Strong material
Easy to install
Cons
Expensive (compared Just Roadster)
Seems
unsafe (3M is not very strong after it's been in the sun for an extended period of time)
Doesn't cover everything (I don't feel that the back seats are enough to cover the air)
Windblox
(
http://www.windblox.com/styles/bmw_z4_windblocker.htm)
Pros:
Cheapest
Covers everything
Cons:
Ugliest straps
Doesn't seem to flow well compared to the others
FWIW, it seems that the Just Roadster and the OEM BMW are the best ones
Thoughts?
And yes I did search, that's how I found those links and information.
Thank you
I found the BMW kit for $435 shipped...