I had a ski-doo modular used it for a few season sold it and got the BV2. They are the best and most expensive but worth every penny. The mod's seem to push on your chin and make your jaw sore plus the straps for the mouth piece break alot and you need take the mouth piece off every time you want to talk and they are hard to snap back on (ie gloves). The BV2 allows you to adjust the mouth piece in and out for comfort don't really notice it, to talk lift your sheild push the 2 buttons and flip the mouth piece down when your done push it up and snap very simple (gloves on). The design is nice because when you take a breath its from the air from inside the helmet (the valves above your nose) and exhale out the front thus circulating the air and any moisture inside the helmet. Riding at night every one else has their sheild cracked open and fogged up, I can drift bust and the BV2 stays clear even if by chance it may fog a little, 5 minutes after normal riding it's completly clear again. You can find them on ebay from $340-370 and go to a local ski-doo dealer try one for the right size and if you wear anything under you helmet make sure to take it with you.