I've tested and used the standard Beyerdynamics, AKGs as well as multiple Sennheisers, specifically the HD650. Although I got to love the HD650 (it's still the most comfortable one out of all the ones I've used) it's more of a hifi headphones type and a fantastic one for that matter. But mixing wise (I also use the Yamaha Hs8s + sub and got used to them) the MT8 blew me away. It took some getting used to, but once you use it more often and the frequencies all come to shine, it's absolute killer!
+Sound wise there's absolutely nothing missing (giving the price)
+Handling as well as swappable cables are a plus too
+Size of the earpads are great (I'm on the bigger side)
+Works great with any smartphone or iPod etc due to its low impedance
-The only downside is the comfort, but that's coming from a longtime AKG and Sennheiser user. On longer sessions the bar on my head seems to pressure a bit. It could also be a plus, since it reminds you to take a break every once in a while though ;)
All in all I would definitely recommend this product. Great purchase.