I got my white KC84 with MX Clear and PBT caps last week. I purchased from xuanwumen and it took about 3 weeks to arrive via China Post Air. I fell in love with small form factor keyboard after I got my KBT Pur Pro. It is great for gaming, because I can bring my hands closer. However, I sometimes need to use F keys during gaming session and Pure Pro falls short on that. KC84 fixes that problem. It has pretty much everything I need and it is my daily driver.
The good stuff:
1. MX Clear is more tactile, whereas brown felt more like a linear switch to me.
2. PBT key caps has more aggressive texture than the PBT caps on my Pure Pro.
3. It comes with a plastic holder to secure the USB cable.
4. Key legends are laser etched, which I prefer more than laser engraved.
The not necessarily bad stuff, depends on how picky you are:
1. the legends on the caps are not aligned.
2. PBT caps are not as thick as the PBT caps on my Pure Pro.
For the KC84 owners here, I have a question for you. I connect my board to my PC via USB. Every time I turns on the computer, the num lock key is always lit. This means if I type "JKL", it will turn into "456". This is quite annoying. I know there is no dip switch on KC84. Is there a way to disable that function?