I have been playing these reeds for years now after having experimenting with many kinds (I have finally settled on 2M). The only problem I've ever had with these reeds are the fact that there can sometimes be some inconsistencies with the quality of the reeds in each box, but ones that aren't as good can just take a little longer to break in. I'd recommend to any saxophone player out there to at least try out this line of reeds.
These are really good used to be my go to reed. However these are prone to be inconsistent sometimes all reeds plays great. Sometime only 50% of the reeds. But sound wise these are one of my favorites.