The way my 509s fit, the part where the two layers of foam fit together rubs on my nose. It's not that great at that part. If they redisigned that specific part, they'd be PERFECT for me.
As a side note......I quit using Quick Straps because when my goggles freeze it takes too long to get enough engine heat to thaw them as they are attached to the helmet...plus I wanna keep my helmet on and stay warm.
Sooooo now I just pull the goggles and put them on the spark plugs face up. When I do that, the goggles come out bone dry and are actually feeling WARM when I put them back on. They take way longer to ice back up on deep powder days.