I have been playing for almost four years now, getting lessons from a great teacher, practice regularly, and I'm now looking for a mouthpiece that will give me more of a smooth jazz type tone. Currently, I have a Yamaha Custom Z alto sax (I know not the best sax for smooth jazz), a Rousseau NC4 mouthpiece, and a G Meyer 6 facing mouthpiece. I'm looking for the tone of some players like Eric Darius and Dave Koz. I read that Eric Darius uses a Yanagisawa Metal Alto Mouthpiece. Would buying this mouthpiece help me get the tone I'm looking for or should I look for a different sax (or maybe stop worrying about my equipment and practice )? Is my current setup good enough?