Warburton Top Part 3 MDV Trumpet

I have used Warburton mouthpieces for last 20+ years gradually increasing size from 5SV up to a 3MD which I felt was my maximum size as the 3D was just too deep for the variety of music that I play, however since changing on to the new 3MDV the extra V shape has given me extra volume and freer high range for orchestral playing with a PT backbore and also commercial music with H or J29 backbones it even works well on piccolo trumpet using a C trumpet backbore that I have. A very versatile mouthpiece top.