mega sceptile looks badass good job
but for me personally I think it would look more tense if both have looked into the same direction

and it' hard to tell which is my favourite mega cause it kinda depends if I already like the normal poke ... so I guess it's mega Garchomp normal Chompi is in my top 3 faves and his mega is one of the few that I actually used ingame but I also like mega Beedrill, Sharpedo and Gallade purely for the design :D