I’m all but certain that OP is talking about using baritone reeds on their wide-tabled mouthpiece. Nothing gives the impression this is about synthetic reeds at all.Among synthetics, I would rather suggest reeds
made from composite material with an internal structure similar to cane. Reeds made by Bari are not composite and very different from cane.
The costs of baritone sax reeds I think will quickly cure your curiosity.I have an older caravan mpc that I use #4vandoren blue box reeds .Question is the table and rails are wider than the reed so could I use a bari reed #4??.What do you think will change in the sound or ease of playing