Does anyone have experience with SG helmets? My son wore a Xenith helmet last year and really liked it. The league is changing and going to the SG (Simpson Ganassi sp?) this year and I wanted to see what the experiences are for those having had them already? The league is stressing better safety and stating that these are a step in that direction. They are lighter with a different foam structure on the inside. They recently received a 5 star rating from a recent Virginia Tech study but these ratings have been a little skewed in the past by the helmet companies.