Bushguy, Romanee and I are Portaphile lovers, as are others on here. BUT they need 400-600 hrs burn in to sound truly amazing. In fact, I'd stack mine up against my Supermacro I think it's that good. DOn't have Bushguys' 600 ohm phones, but the Portaphile drives my Beyer 990 250 ohm quite well. And of course it's stellar with my IEMs.
And you're right. At a price of mid 200s, it is a steal, albeit a battery-eater but that too can be overcome by the proper battery selection so you'll get about 10 hrs life out of a charge