I listen primarily to classical, mostly opera, but with healthy doses of late romantic solo piano, and orchestral. I rolled through several different types, but ultimately ended up with d7000 with J$ pads. I'd been hesitant about even considering them because the reading I'd done had emphasized the great bass, and the almost shrill treble. The J$s and a neutral somewhat warm amp made them perfect for me. The last F in the statement of the theme in the Rach Corelli variations lingers fading away. The controlled bass shines in the opening of Das Rheingold's opening with the double bases (half with the lowest string tuned down a half step) opening with 4 measures of low E flat followed by 132 measures of gradual layering in of the other instruments -- clear no muddiness at all. I've tossed them against Sills in Donizetti, Callas as Tosca, Scotto as Butterfly, Olivero as Adriana, not to mention Dave Carter and Tracy Grammar, Growling Old Men, Tempest, and Pendereki's Threnody for the Victims of Hiroshima and haven't been disappointed yet.
At home, right now I usually use the Nuforce HDP, work either the pico dac/amp combo, or an iMod through headroom micro amp (I don't care for the micro dac so much). Yeah, I like them so much I a second pair. (I got one here, and one off eBay, cost was not that much more than one pair would have been from Amazon.)