I am on my 1st reed of my first box. Using 2 med. filed on soprano with various mpcs. a s80c, yamaha 6c and metal selmer jazz C. I really like the reed so far. I am into about the third week of playing about 4 hrs. per week and just noticing it is getting a little less responsive. The reed played right out of the box, I can only hope the remainder of the box is as good.