I'm looking for a a really powerful nice wireless PCI express card, that's compatible with Linux. I know LAN is better but I'm unable to run a cord where I am. Also I have nice and fast 5ghz AC wifi.
I use this adapter and it works perfectly without any issues out of the box. I have had many issues in the past with wireless networking on Linux but in my experience if you want something that works you can't go wrong with Intel.
The actual card in question can be found on Intel Ark here: http://ark.intel.com/products/75439/Intel-Dual-Band-Wireless-AC-7260?_ga=1.165223869.323521721.1464268398 and is 802.11/ac and also has Bluetooth 4.0.
This should also work as it uses the same Intel Wireless 7260 card as the one I have and is a little bit cheaper.