I got a black/red one for more than 1 week and I love it!
The first thing attracted me of considering this purchase is, this headphone looks sooooo awesome!!! The different colors, the leaser logo on the side, the solid construction, etc, all pushed me to buy a pair. But before I bought it, I read a lot on the internet and many people mentioned its V-sharp SQ. So as an audiophiler, I'm afraid the SQ will drag me off.
But fortunately, our local electronic franchise has audition, so I went to their different stores to try it on before I made my final decision. Then I found out: 1. it is V-shape, but not that bad in the mid at all; 2. in different stores, the mid is different, some are really lay back and some are much forward. So, I realized maybe it depends on the burn-in. I admit, it is not a balance HP at all and my Amperior is more balance than it. However, the punchy bass is really attractive to me and I have never hear that powerful, clear and deep punch! It makes me feel that the drummer is so energetic and passionate and all music through it is full of this feeling. In another word, it is not a technically perfect headphone but very very very enjoyable to listen to. Meanwhile, the details are also there, of course not compatible with my HD800 or HD650, but definitely similar to my Amperior and to be honest, it is quite enough.
So, I put my foot down and grabbed a pair from that store. Thekash, you are right, in the first few hours, it sounded muffle and lay-back in the mid. But because I had experience in the store, so I decided to leave it with pink noise burn-in 10 hours in the daytime and 3 hours casual listening at night for 3 days. Amazingly, after 3 days, it is significantly better! The mid is back to the Amperior side, the treble is clear without harsh and of course, the punchy bass still made me very happy.
So, I do suggest you to give it some time and burn it in for a while to make the final judgement. I hope you can like it as me.