Having played on a Bach 1 1/4c mouthpiece for over 30 years I thought I'd try one that helps a little with the upper register. The VB 1D does that very well but without sacrificing lower note tone and clarity. It is also just as focused and gives me the same attack I get with the 1 1/4C. I alternate between both of them depending on what I'm playing. But it doesn't replace practice, you'll still need to put in the work, but it it helps. An excellent product.