Most Favorite and Least Favorite Mega Evolution?

Favorite megas are Mega Houndoom (still trying to get a shiny Houndoom for a shiny mega Houndoom) and Shiny mega Gengar (it's so amazing and white!)

My least favs would probably have to be Mega Manetric.... It's just like.. Rhombus. What. Rhombus. When from awesome lightning dog to.... Rhombus.
Ad my other least favorite would have to be mega swampert. It's just so weird... And buff. And weird. >.>

 

Mega Aero is one for me! FLYING type, insanely fast, and Rock STAB! As well as psuedo stab of many choices!

 

Mega. Garchomp. He is a beast! I love him so much.

Least favorite? Mega Venusaur. I see a lot of people using him, and if you use him right, he is good, but one wrong move and he's fucked.

 

My favorite Mega Evolution would have to be Mega Absol and Mega Banette. It's hard to choose a least favorite but I don't like that Lucario can be Mega Lucario because I don't like Lucario that much, it's not really all that great to me like everything is making it look.

 

My favourite Mega is Mega Heracross. It's quite the wallbreaker/stallbreaker and it's the Mega Evolution of my favourite Pokémon.

Least favourite? I'd have to say Mega Lucario. Thank god that thing got banned from OU