Discord = Best Waifu Potential · 1:05am Oct 30th, 2017
Key word here is POTENTIAL. Currently my personal favorite is Luna due to how cute and social she is. Not only that, but very open to trying a variety of new experiences. Plus the fact that I enjoy staying up late and enjoy the late would help a lot as well I am sure. I am sure other people would argue that Celestia or Book Horse is Best Waifu and that is fine.
Now as to Discord...he has what I would say Near Unlimited Waifu Potential.