But, it can be a bit hit-and-miss, to find just the right reed in a box of 5. I'm lucky to get 2 or 3 reeds that work perfectly out of the box, but when the right one comes out my tenor never sounds better.
I use these reeds with a hand made RPC tenor mouthpiece and the sound can be rich and smooth, and solid and not squeaky at the top end of the saxophone - including, nice round altissimo notes.
It's my favourite reed for that mouthpiece - but only if it's not a dud. That's the main reason I'm not giving it a full 5 points, as the the chances of them all being great reeds (in my experience) is too uncertain.