What is your favourite Mega Evolution?

[ShinyLuigi]

Aesthetically; Mega Rayquaza. I get chills whenever I look at it.

Competitively; I have to go for Mega Salamence. I still don't like how it looks, but I do like to have one in my team. Although one time at a tournament of another forum, I won against all odds because of my Mega Sableye...