Whats the best metal fusion weight disk in your opinion?

Hey guys, what's do you think is the most effective metal fusion weight disk in your opinion? I think that the flame is the best, the shape makes it so.... sharp? Anyway there's a lot of disks and all have their ups and downs, for example the storm disk can be great for attack, but has poor stamina and can't hold a fight for very long.
lightning for me as well. i can make it spin steal well.
Gravity - Has very good smash attack.
Vulcan, has even better smash attack and looks very, very nice.
there´s no such thing called weight disk in MFB... that´s on plastic.. now we call fusion whel or metal wheel..
and sorry for double post but : Earth is my favourite.. it has great stamina and for me it can be used in more situations than Burn.. burn beats Earth in one on one but Earth beats others easily and it´s dominant against destabilizers..
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