I keep reading that the 82z is a jazz horn and that the EX is the classical horn. Is there any validity to this or is it just how they are marketed?? I play both classical and jazz and so I need a horn that can do both. I was on the market for an 82Z lacker model but I've also read that the 62II is just as good for less? Out of the 3 professional Yamaha saxes which one would you recommend?