Hi Jesseg, I got the chicony that doesn't present any yellowing, even though it isn't flawless. I discovered with my great disappoinment that the "end" key doesn't properly register, as you can see on the attached pic. I'll attach the serial number also so that you can tell me if this kind really comes from the other part of the world!
The one I had was in perfect physical condition, didn't look yellowed at all, It also did end up in the EU so this could be it
My regards.