I generally use straight of grain binding (mostly WOF). I find it easier to work with than bias, because straight cut doesn't stretch. It's also easier to cut. So far I haven't had any wear issues, but I hardly ever use my quilts for blanket forts any more, so I can see where it might be a problem in different use cases.
I do use bias for curved edges. I have used a combination of straight on the sides and bias on rounded corners when the binding fabric doesn't have a pattern.