As a owner of a Stax SRM1-mk2 and SR-202, I highly recommend trying out stax if you never have before. They were more open and transparent than the W5000 I came from. I guess their only caveat is the smaller soundstage and the fact that they aren't a bassheads phone(there's bass but it's not bloated, it's tight and nicely extended). These will be the some of the fastest and clearest phones you will ever hear.