Yeah I'm liking my M80s more and more every day. At first I thought they were a little bass light, but I just needed the ear pads to conform to my ears. After a few hours they were golden.
The great thing about them is that they sound A LOT like the Vsonig Gr07 with better imaging (a more 3d feel)...which is an outstanding trait to have. I've found my favorite portable and favorite IEM...and both were less than 200 bucks! Can't beat that at all.