It's almost hard to go wrong with a helmet now days...lot's of great choices out there. Ultimately, it comes down to what kind of riding you do and what conditions your riding in. In my opinion the 509 set up (helmet and goggles) do the best of covering all bases. It's the only 1, 2, combo that's designed for snowmobilers by snowmobilers. The goggles especially the sinister have a great seal with the helmet so there is no skin exposure which prevents frost bite, wind burn, etc. The goggles run a dual lens system, have plenty of venting, 3 piece foam system, 3 beads of silicon on the strap and a detachable nose piece. Swapping lenses is also pretty simple which is an added bonus. As far as the helmet goes the Carbon Fiber's weight speaks for itself. But if it's out of your price range the poly carb helmets have an average weight of 3.4 pds with all the same features of the Carbon Fiber. Both helmets have removable/washable liners along with venting, flex visors and a breathe box. 509's customer service and warranty have been second to none in my experience which makes me feel better when spending the kind of cake on my noggin.
Side note- I do work for a distributor and sell Klim, Motorfist, FXR and Fly helmets as well. All are great helmets and they all have features that set them aside from the other. However, in my personal experience I have had the best luck with my 509 set up over the years. The final decision comes down to personal preference and what meets your riding needs the best...like I said earlier, it's hard to go wrong with a helmet today.
Hope that helps,
JW
Just bought the carbon fiber 509 and what a great helmet, sure is lite weight. For me, fit comes into play more so then does the price and I tried them all and this one fit me personally, the best.
