# How to look for a good quality 11mm rotary encoder?

The rotary encoder attached to the wheel of my dear logitech MX1000 started glitching a few weeks ago. I took it out, tried cleaning it the best I could but it was still bad.

So I went shopping online for 11mm mouse wheel encoders and got 4 random ones, each costing around 30 - 90 cents. I tried them all and they all suck even worse than the glitchy original encoder.