How is it? Is it any quieter than the original? Is it better or worse or about the same?
From what I heard, they are good for high humidity climates.
I got the Spec X which is pretty much has the exact same internal makeup.
The new “X” bearings are great. They are extremely smooth and relatively quiet.
Totally worth it. And, they don’t need a break in period like Onedrop Bearings.
And when spun on the tip of a pen, it spins over 15 seconds 
The only difference between CTX and Spec X (besides the centering) is that CTX come pre lubed so slightly responsive 