easy to play, durable, neat sounds

I have experimented with this (and other more expensive) Clarinet leaves because suspicions to an allergy. These inexpensive sheets I'll clear most clear - better than the alternatives made of plastic or fiberglass. The fiberglass sheet can indeed play easy, but sounds cruel. Plastic sounds great, but also in the soft variant I get only with difficulty at all sounds from the instrument. Nachfeilen did help, but it's still very hard ... The Rico Plasticover other hand, is easily: it talks immediately, without water, and sounds so good that I still use, although now it is clear that the allergy another had cause.