Started clarinet last July. No other instrument. I have been working my way up in the reed strengths. Now using Vandoren # 3. Eased into the 3 from 2 1/2. I have been using the #3 exclusively for 1 1/2 weeks ( I practice about 1 to 1 1/2 hours daily). Last night I decided to get another #3 going just to be able to switch off. I could not believe how much harder it was to use. Squeaks and on notes like natural B and C you need to really bring it from below. When I switched back to the original #3 it was sooo easy. I know that reeds soften with use, but, should there be this big a difference?