I agree with quite a bit of your review, and it's a long one. My only point of contention being the comparison with the the Penon 10th which I own. I find the Tansoi X to be superior across the board. But different ears and all that. Just wanted to mention if people who haven't heard either that some prefer the charms of the Tansoi X with it super dynamic bass.
Headphone Reviews and Discussion - Head-Fi.org
Sure I followed your and others opinion on it; bought it afterwards: no regret.