A comparison of Burgers: Shake Shack vs Five Guys

After a long weekend without a burger, I am craving one desperately today and so I am going to have one tonight with Atul. A lot of people have asked how I can have so many burgers, my answer came today in the Time Out review of Five Guys.
A burger is  just a sandwich - therefore it is fine to eat whenever you like; don't judge me!

Another question, after having these two burgers two nights in a row is, which one is better. The answer is in my choice of where I am going tonight- Shake Shack.

The Shack Stack burger was really good, the mushroom as mentioned in the previous post is to die for and added such an excellent touch to this burger. However, it seems that the majority of people disagree with me:
http://www.thebraiser.com/five-guys-vs-shake-shack-london/?amp

I will not talk bad of Five Guys- because after having their burger I will not be having a McDonalds or Burger King any time soon. I am very happy these two are now in London.
Just in case you do ask, I had a healthy weekend of Risotto, Beer and Soup. It is always good to have a balanced diet... And then a burger.