Thanks for responses. Going by "difference between one an another mouthpiece is 3 weeks" principle...
I like big mouthpieces, as to me they provide the most sound. When I played guitar, I went for the thickest strings as they provided more body to the sound. Having said that, they were hard on the fingers while thin strings you could play much longer. Now I assume a larger mouthpiece means less endurance, however, logic tells me it just means I need to play on it longer to build up the needed endurance on that kind of mouthpiece, bonus at the end being, larger sound.
I know I like large mouthpieces, (Currently using B2S3 monette) I like the sound I get from them, I know endurance suffers, but, more practice should fix that. I plan to go to a B1 next which is the largest. So is it a 'wrong' choice or not?
So what are the reasons people choose certain sizes? Mine as gathered is sound.