I've tried different heads, but always seem to come back to my stingers! The price is right, American made, shaving sharp out of the package, easy to re-sharpen, they fly quiet and true, great customer service, and the best guarantee in the business.
I started using them years ago with wheels. I was happy with the flight and the blood trails they left. Being a COC, they were a no brainer when I switched to trad.
A few years ago, I was hunting on the ground, and the rut was heating up. A nice 5pt chased a doe right to me. He wasn't leaving her sight. Even after I shot right underneath him. As I prepared for another shot, the huge doe stepped out for a gimme pass thru. Well, I knew that buck wasn't going far, and I only had one broadhead left. So I retrieved the arrow from the doe out of the dirt, and with only a few strokes on my pocket stone, it was spinning true and shaving hair. I spooked that buck standing 10 yards from my dead doe.
I also once sent in 9 broadheads that I had accumulated over the years that were either bent, broken, chipped, or otherwise unsharpenable from misses, hitting gravel, or prying out of trees. I received 9 brand new heads in replacement, no questions asked, and it cost me less than $5 to ship them. You can't beat that!