I'm using a Sakshama MBI that I had him make a little darker for me because I wasn't used to high baffle pieces. Now I'm wishing I went brighter. Wondering what is working for all of you?
Just worth mentioning that reeds can make a huge difference as far as tonal quality.
I also play a high baffle mouthpiece ($28 metal Chinese-made & probably the first one out of many I've bought that was actually quite good out of the box.) Plus I've added a wedge a la Runyon - because the piece was a low baffle model.
What works for me on tenor are Hartmann Fiberreeds, which are brighter than cane, and also are more efficient sound producers than cane. I've tried most of them; the only ones that didn't do it for me were the Hemp and the Onyx. YMMV of course. Bari and Fibracell synthetics are also brighter than cane. Of these 3, the Bari is the least like cane as far as tonal quality IMO. But there's no accounting for taste.
Of course reeds (synthetic or cane) can be adjusted to play more brightly, which I will do if a reed needs a bit more buzz.
This is a good adjustment chart: https://owd.tcnj.edu/~mckinney/reed06-03-01-gif.gif
Also, reeds will be brighter and more responsive if asymmetries are removed (eg. Ridenour method, or, IMHO better, a PerfectaReed gauge. Harry Hartmann's reeds are usually cut quite accurately. Fibracell, not so much.