I know I see people asking about these every so often and I know it's all personal preference and there are mixed opinions. My .02 overall I like them, I enjoy the reduced key travel. It does eliminate the noise from bottoming out the key, but honestly it's not a big difference unless you're just crushing your keys. It won't muffle any mechanical key switch sound if you're expecting it to. I know one of the complaints was the feel of something being stuck under the keys. I personally haven't noticed this as the rings I used seemed relatively solid when button mashing. I didn't end up getting the Razer set, instead I have a Rosewill set from Amazon - https://www.amazon.com/Rosewill-Rubber-Dampeners-135-Pieces-RO-100T/dp/B00K73IE1C I did this primarily because I didn't have anything else I needed from Razer at this time, so I couldn't get free shipping. And also the clear vs the green O-Rings since I wanted to prevent any blocking of the Chroma lighting, again I saw mixed reviews about solid colored O-Rings blocking light or not. I went the safe route and can safely say I don't notice any difference in light output. My only suggestion if you install any O-Rings, be careful removing shift keys or anything with a metal retainer/rebound type connection to the keyboard. I could see these breaking really easily. Anyway these work perfectly.