These did an amazing job with the sound on my keys (Holy Pandas) and took out any of the sharper sounds during hard typing. I didn't realize it was going to reduce the travel as much as it did, but I actually really like that. It eliminated most of the pre-travel to the tactile bump, and has made it feel as if I had stiffer springs. This is a bonus for me because I was thinking about ordering heavier springs. They also seem to reduce stem wobble just a tiny bit.
I think these do not look good on low profile keyboards, I would like them more if you could order them in a solid color. But I understand a lot of people need clear ones for RGB switches.