I use my M50x monitors almost everyday and love them. I've had them for over a year now and they've proven to be tough an reliable. I wear them out and about, I'm not the most delicate person and they've nary an issue yet. I find they carry a wonderful industrial asethetic that fits with almost any situation. They sounds fantastic, especially for the price. They aren't super "Beats" style bass heavy focused but they also aren't neutral, it's a very nice balance that makes them enjoyable to listen to for a variety of music types. The only concern I've heard from friends who have tried them is that some found the clamping force slightly too high and a couple disliked the stock pads. I personally don't have these issues but it's something to keep in mind.
Oakville, ON, Canada