I had a +4 on my 07. The protection was superior to the stock windscreen. However, I found the fit and finish lacking. The thickness of the plastic was thinner than the Rifle screen I am presently using and the machining of the edges and the two holes where the cover for the attachment screws attaches to the windscreen were rather rough.
I've said it before on this forum -- if you are looking for the best protection, go with the Rifle screen. It's no contest.