My experience with Chuck Levins has been so-so. They have a great selection and some good prices and the Woodwind salesman is very nice. The problem I run into is that very rarely do they hand me a horn that plays good. Usually the Yani's have played well right out of the case, but most others don't. When I bought my alto, I was interested in the Ref 54 so I went up there and he brought out 4 Ref 54's to try. Only one of them would play from top to bottom. When I asked him about it, the response was, "If you buy it, we will send it down to the tech before you take it home." Sorry, but my attitude is, "If you want to sell it, you send it down to the tech before you hand it to me so I can really try out he horn." I ran into the same thing when I tried out pro level sopranos there. It's not like we were talking student level horns.
The other issue is space. I tried some Tenor mouthpieces there once, and they had no place for me to go and that place was so packed it was a zoo. You really can't try out MPs with people bumping into you and it being very noisy.