Bd ed gears for mage, a question ( evg solo/party )

[avaunt]

So I've been wanting to ask, is bd and ed mix better or 2 sets of bd and ed?

Right now I'm at around 140bd (bd set) and around 50-60 ed ( ed set ) im currently finding for ed gears, but I asked around and most ppls use a mix of ed and bd in a set instead of 2 sets, so I'm confused if I should mix em instead of getting Ed set..

If someone can answer, and tell me why is it better or the opposite, it gon be really nice, ty.

-avaunts