I realise this subject has been brought up on here more than a few times, and I've looked through some of the older threads that touch on this but I really don't understand why "big edges" are desirable. Reading some of the other stuff on here people seem to suggest that bigger edges provide a wider sweet spot, but I can't understand why that would be the case.
If I overlay the cross-sections of a traditional v-shaped profile and a modern concave profile it looks something like this:
My understanding is basically the more wood you have behind the point of contact with the ball the better. What I've tried to show with the lines in the diagram is that a traditional v-shape should therefore provide a wider sweet spot. The only advantage of the big edged bat is if the ball comes off the very outside sections of the blade and I assume when this happens the bat will twist slightly on impact so energy is lost and you won't get much power anyway.
I'm hoping there's a few knowledgable types on here who can point out the flaws in my argument, before I head over to Hove and spend a load of cash on a Mjolnir!