I have an MG Head DT that I'm pretty happy with. Sound improved alot with EI tubes. I have a pair of Sennheiser HD 600's. They are very accurate sounding, but somehow a little unexciting. I have a pair of Grado SR 325's that are a little more dynamic and exciting, but are more prone to ear burn and sometimes sound a little congested. I enjoy my Stax 303 classic set the most, though the sound may be dark to some ears. They are probably inaccurate compared to the Sennheisers. More fun to listen to though, and being primarily a speaker guy, I like them because they sound more like speakers. You might want to look into trying out a set of recent model stax lambda series (sr 303 or 404)headphones with a tube amp (SRM T1, SRM T1s, SRM 006t etc.) Older stax headphones tend to be a bit more unforgiving and hard sounding.
