I normally play Link 5* ebonite on alto but having tried a Runyon 22 (black) on tenor I decided to go for the same mouthpiece on alto. My wife thought the white was a good colour and knowing how good Charlie Parker sounded playing the white Runyon, well it just had to be done. All I can say is that for a £35 investment what a great improvement. Enjoying playing alto more than ever. The mpc is a 6 and a bit more open than the Link and far wider than the Ponzol metal I was playing and at last the higher noted are becoming easier and more in tune. Just wanted to make a recommendation for the Runyon should anyone be looking for a change from the standard Yamaha that seems to be the usual first upgrade. Also want to recommend East Coast Wind in Essex as a great source of all things sax.