This is proly going to be brief. These are comfy (to me), light and black. They sound a bit inoffensive on a first listen. But they are not primo material. You can currently get them for like $45.
In light that an HD518 can be purchased for $85 or less on a good day, I would skip these and save for the HD518 or HD558 (EDIT: maybe worth considering if a closed
affordable headphone is required).
My problem with them is that they seem a little forward and tizzy on some songs. The bass is there, but it's a bit recessed (EDIT: seal dependent