Picked up a new microphone, took a better audio recording of the key switches. Also replaced the old acrylic top plates with 1.5mm 316 stainless steel plates.
Comparing short typing samples using the U4 first and U4T second. Both are very nicely tactile, I find I enjoy typing on the U4T more. But the U4 are so very silent, they are pretty perfect for using in a shared/quiet space if you don't want to annoy others with the sound of your typing.
