So…I got an identical K4, but with the blue switches, on the understanding that I could return it if I didn’t like it. Thing is, I do like it. That’s surprising to me, to be honest. But I also really like the brown switches. I have a feeling that I’d also like the red switches too. My God, but I’m just a basket case. 
NB: The browns are the best. Hands down. 
But…I’m not returning the blues. Too good. 
Addendum: It has to do with feedback. The browns feel better, but the blues sound better. I can’t choose between them. 






