The 51D is a popular mouthpiece, so it may be a fine choice. One thing to be careful of, though, is the size of the room you judge it in. The 51D has a smaller sound than the Wick, but it is consequently more centered with less "fuzz." In a smaller room, the 51D sounds better inherently. But you should test it in a large hall, such as one you might perform in. There the Wick mouthpiece might have a larger, more open and singing tone. But it still depends on your own style of playing and how much air you use. You might prefer the 51D even in the larger setting. Just be sure you have a chance to test it that way.