What Is the Best WiFi Network Adapter Today?

I have been looking into the best WiFi Network Adapter for a while now and I can't figure out which is worth buying at the moment.

• Of course the adapter is used in combination with Kali
• I am looking for one with mainly the best signal strength

I came to the conclusion that most people/articles/reviews are saying that the Alfa AWUS036NH is the best choice. At first I thought the Alfa AWUS036NH (2000mW) must be the winner because of the highest mW but multiple sources told me the Alfa AWUS036H (1000mW) is actually better and more reliable.

For (source) example:

http://rooftopbazaar.com/wirelesscards/

What do you guys think or have experienced?