I'm curious about the Killer wifi cards as I've never heard of them and I've always had issues with the Intel wifi cards in my Thinkpads. I went so far as to buy USB wifi for those times when the Intel one wouldn't work. Basically I'm saying that when I first saw it I was happy to see it wasn't Intel, but you are saying it's worse?

[edit] Oh... and you can get the 16G model without the 4K display. Just select the i7/8G model and upgrade it.