I just finished testing the Sonic for the last time and it is a Pass.
Derrick Perkins (president of the American Broadhead Co.) has put alot of time into this head since my first review and the final product is a bullet proof version of the original Sonic.
Yesterday I tested the new ferrule/Blade combo to such an extent that I split an arrow after trying to damage it with numerous shots into a dry bound section of popular
After 7 shots the only damage was to the forward point and it was VERY minimal...no more than I have seen on a trocar tip in half as many shots.
The blades have been exceptional in their durability
I will now stand behind this broadhead and say that you would be hard pressed to find a better replacement blade head for penetration/flight and durability