I like them. They are not ruler flat or reference grade but they are fun. Much better than my HD-681. I like them better than my HARX900 but not as well as my Senn HD-439 or HD-598. I'll be ordering DT770 velour pads. Got these on your want list? Go for it!:D

I've had these for about 6 months and I find them to be outstanding.  I think you'd pay double to get anything better.  Natural, unhyped response. Nice full soundstage. VERY, VERY COMFORTABLE. I use them with a Fiio E10 as well as a Focusrite TwinTrak Pro. I have quite a bit 24/96 and vinyl. For reference I also own  AKG K240M (600 OHM), Sennheiser HD439, Superlux HD681 and AKG K55.  The 598s are by far my favorite, no contest.