I was just reading Harriet Hargreaves book on machine quilting, and she say that in no uncertain terms bias binding is the best looking and she simply won't do anything else. However, I think she shows her own BIAS in that remark LOL
I have not read anything generally about bias binding wearing better, only its usefulness on curves.
However, I have read that setting the joins of the binding on the bias, not just joining the pieces end to end, is a more sturdy construction.