I would answer mega - if its too wide, you can just tighten them.
I had megas and whereas my foot is not particularly wide (bargain off here) I didnt feel much difference with buckles done up.
but yeah, instead of discussing it through you really should go and check for yourself, there is always a factor or two that are forgot to be taken into consideration when discussing things like this on the internet.
I would answer mega - if its too wide, you can just tighten them.
I had megas and whereas my foot is not particularly wide (bargain off here) I didnt feel much difference with buckles done up.
but yeah, instead of discussing it through you really should go and check for yourself, there is always a factor or two that are forgot to be taken into consideration when discussing things like this on the internet.