Hello, I bought an MR-300 last year, and it feels good. Actually, it's not a bending finger, but a bending finger that helps you achieve super blowing and super sucking. MR-300 is a special harmonica specially designed for overblown, which breaks through the traditional complex tuning and overblown.
If you want to play difficult music with it, you can buy it. If you just want to have fun, it's a little expensive, but there's nothing to say about its single tone and bending sound!
Overall evaluation: a