The V series will give the piping clear projecting, radiance which sounds so good on top of a section, or in front of the ensemble playing solos. You can float in the high register or throw as much air as you want.
The below V series pieces are listed in order from largest to smallest cup diameter.
This mouthpiece is the origin of the line and is the mouthpiece I use most of the time. It gives me phenomenal clarity, flexibility over the entire range, with a very personal sound. For me I still consider this an ideal first trombone mouthpiece in the orchestra. If you are used to playing something with a smaller rim, it may take a while to get used to. Give it a go, the width of the rim gives you warmth of sound, and amazing flexibility. whilst the shallowness of the cup brings a unique combination of; incredible high register with warmth of middle register.
The V4 is a slightly scaled down version of the V3. The overall design of the V4 is exactly the same as Ian's personal V3. The difference is in cup diameter. This mouthpiece will work for those that find the V3 too wide in cup diameter. I Love this mouthpiece and I would definitely use this on a lot of repertoire, in particular if I were playing in a traditional brass or wind band.
The V5 is designed around a traditional 5 cup diameter. The V5 for me is an indulgence. It has an almost turbocharged high register, projection, and clarity combined with the sweetest of sounds. Frankly I can not play this mouthpiece without laughing with sheer delight. I recommend this mouthpiece to people playing first trombone in brass bands, or those playing a lot of light playing, or crossover jazz. I would also recommend this as a trombone player's first large bore mouthpiece.