Ben is good at his work. I can say this because I worked with him for a couple of years and saw good results. However, he decided to (yes, I strongly believe it was done intentionally) mess my body up at some point which has led to problems from which I have not fully recovered after 6 months. I would give him a 5/5 if it wasn't for this, so if he doesn't want to screw you over (or maybe it was an accident... in that case, if there are no accidents...) you should be okay. But I feel like having some integrity is very important in such a job, and I would certainly never go to him again after this horrible experience, as I believe he doesn't have the integrity and level of moral standards that someone practicing such a profession should. And if it was an accident (which I really doubt), I'm still shocked by how little he cared after it. Considering this I'd give him less than 1 out of 5 if I could, but too bad that's not possible.