Shoei GT-Air vs RF-1100 vs RF-1200

[Generic]

I'm looking for new helmets and thinking the Bell Carbon Star is going to be too loud. It looks like there is a transition pinlock shield coming for the RF-1100 and 1200 and the Air has the flip down sun shield so I won't lose the flexibility of my Vortext with Transition shield.

GT-Air - Looks awesome, but isn't Snell approved. I'm guessing this could be a problem at the track but I could use my Vortex for that
RF-1100 - Can be had affordably, lots of good styles, should be quieter than my Vortex
RF-1200 - More expensive but flows better than the 1100 I'm told

Thoughts on these? This is all assuming they fit my head properly.

[gator4life108]

Have you checked out the Scorpion R2000? It's their top of the line MotoGP Helmet. Will be my next purchase. The reviews I have read state it flows a ton of air and is fairly quiet. Free tinted visor and I have always had good luck with their anti-fogging system.

http://www.revzilla.com/scorpion-exo-r2000-helmet