Picked up a pair of these today at Best Buy and I've gotta say, I love them. To compare, I've got a set of M-80s, Senn HD25-IIs, the new UE 6000s. I've gotta say, these are definitely the most comfortable and they sound fantastic. They isolate well and they look great IMO. They aren't the brightest of headphones...seem pretty mid centric after a few hours of listening, with some really nice bass. They compare favorably to the M80 from a sound sig point of view, but some more comparisons will have to take place before I can say that for certain.
I'll have to do some more comparisons going forward, but it looks like Monster has a gem on their hands here. I had low hopes and figured it wouldn't be a problem to just return them if I didn't like them...but wow...I think they are my favorite of the bunch. Extremely easy to drive...straight out of the iPod Touch 5, Sansa Clip and my Macbook Air. I'll have to do some testing with my Fiio E11 this evening as well.
That said, I'm shocked there isn't any talk about these things on here. I guess the brand name on them will turn a lot of head-fiers off...but then again, V-MODA had the same issue last year and now look.
BTW...ordered some V-MODA M-100s too...can't wait to try those as well whenever they decide to release them. I like over the ears better than on the ears, but sometimes I have trouble wearing over the ears w/ my glasses as it breaks the seal sometimes. In that case the on-ears have the advantage.
It's a good time to be a headphone fanatic!