i ordered two from OS Rocket Racing, and really like them. very durable ( the top fin is THICK) and they make them out of a slightly heavier but stronger aluminum. its not 6061 or 7075...it says on their website:
www.osrocketracing.com
"6262 T-9 billet aluminum which is 37% stronger than the T-6 511"
he has my vote!!!! not over the top...but it gives your ride the custom appeal.