I have the 814s for the money they are hard to beat. I could sit and explain the difference but the truth is if you don't already know than you don't need to spend the extra money because you will never use the other shock to the point that you will get the extra moneys worth out of them. It take an extreme rider that is pushing a shock to the max to know the difference. And the 814s actually work better till you are using them at that level.