On most laptops you can swap the killer WiFi card for an Intel one using a screwdriver and 15 minutes. Drivers also "just work" on all three relevant desktop OS for the Intel chipset.
Your other advice on this page was to cover the logo on the lid with a sticker... [Here's my advice: pick a different laptop - there's quite a few good ones to choose from.]
If that's your only problem with the laptop, I don't understand why a (probably technically capable, on HN) person wouldn't just switch the WiFi card out.
