a top notch clarinet made from grenadilla wood <$500

-intermediate or professional level instrument

-a respected model by one of the following brands: Buffet, Selmer, Leblanc, or Yamaha (so that my rather traditional teacher will approve of my upgrade to a higher-level instrument)

-may be used, but must be in good cond., have been tested recently to check playability, and each piece must be confirmed to be part of the same clarinet (I tried to buy one before and I got a half-plastic, half-wooden instrument)

-under $500 please