I'm going to try to make this NOT sound like a commercial but...I just replaced my 2.3mm Gibraltar triple flange hoops with Ahead S hoops on my 1968 Pearl Super Deluxe kit. Wow, what a difference! I had been fiddling with the tuning on the 12 and 13" mounted toms because they weren't quite right. They sounded OK and vintage and all but just not what I wanted. I played around with different heads and finally landed back with Remo Ambassadors top and bottom. Different heads didn't make them sing like I know they can. Playing around near the edges of the drums they were always a little dead and the resonance never was right no matter what I did. The bearing edges are fine by the way. I had Precision Drum recut them last year. The S hoops really opened up these drums, like night and day. My 16" floor tom always sounded fine with the Gibraltar hoops but it sounds even better now....low, meaty and FULL! In addition I get the bonus of having the inward flange protect my 50+ year old bearing edges. What a great product. Highly recommended.