My laptop has Killer WiFi. I know nothing about it. Why is that a questionable choice?
I just learned that Intel bought Rivet, maker of Killer wifi: https://newsroom.intel.com/editorials/intel-acquisition-may-...
But I haven't heard about reliability issues, and as long as that's the case the worst outcome is paying a couple extra bucks for a fancy WiFi card with no difference/a small enough difference you can't notice it.