Light or welter.I did a thread on this a few years back, ranking the deepest divisions. Consensus was heavyweight in the bottom 3.
Light heavyweight is in the argument, which is ironic given that it was once the division that nobody respected!
I feel the Welterweight division is the deepest given the talent moving up from 140 Are we talking today?
In my opinion, middleweight....and that's historically, I don't know anything about this present mediocre age.