Call Ron and order one, I don't think you'll be disappointed...never played a better alto mouthpiece (90R) The roll-over has a dark sound and has a bunch of power behind it, with just the right amount of edge on top. The resistance is good enough to not be too free-blowing but not so bad that it wears out your embouchure. He'll make you a mouthpiece and play on it for a few months and adjust it(worth the wait) till it's absolutely perfect.
I have a 105B just recently I don't know if he makes them much...and it sounds pretty similar to the roll-over just slightly brighter, not at all edgy, just slightly less flexible. My normal 2M RJS feel slightly too hard but that's cool it blows down walls with it
Little too loud for Jazz Band after I'm already burying our new lead trumpet with the 90R...
I have a 105B just recently I don't know if he makes them much...and it sounds pretty similar to the roll-over just slightly brighter, not at all edgy, just slightly less flexible. My normal 2M RJS feel slightly too hard but that's cool it blows down walls with it