Great comparison It turns out that you are like a "Sultan" with many beautiful women, with a different "personality", in his "harem"
I have always liked the concept and uniqueness of the Ninetails model.
Ninetails is a keeper, I think I bought it at $86 USD last year, it is sadly being phased out, so only a few shops are still stocking it, and they are asking sometimes $130 - 150 for it. The tuning filters really work and ain't gimmicks (cough cough looking at your NiceHCK M6), so can be anything from neutralish to V shaped to basshead. With amping it can really give jawrattling headache inducing bass haha. It also has a very organic timbre as per its DD roots and a big soundstage as per the open backed design.
The negatives are that the isolation is poor though, due to the open backed design, and the technicalities (other than soundstage) are also below average for that price range. I think a lot of folks didn't consider it cause of the weird looking fit, but it is comfortable, once u know how to place it inside the ear.