What level difference is enough to ignore style type?

[dfwrazorback]

Let's say you have an 80 player at a certain position, but the affordable upgrades at the same position are only a couple of levels higher. But, you either pack or can afford a player X amount of levels higher but with a different style than your team plays. What would X have to be for you to consider that replacement? 5 levels? 10 levels? Not at all, because style is that important?