Gents, I'm wondering if those of you who have used both Art of Shaving's shampoo and Paul Mitchell's Tea Tree could offer a comparison of their efficacy. While I enjoyed the awakening tingle that invigorated my scalp, I found the AOS shampoo too potent for my fine hair. I recently stumbled upon the Paul Mitchell shampoo and apparently it has a similarly tingly sensation so I'm interested in giving it a try. How does it compare to the AOS?