I own a Korg PXR4, which is OK for practicing, compostion and demo-quality
tracking, but its size requires minimal buttons and switches, thus forcing a
lot of menu-diving to use the interface. The faders also have very short
throw. I'm interested in getting one of the larger DC-powered units, such
as the Boss or Fostex 8-track. I don't need modeling, effects, or onboard
MIDI backing tracks, just a decent interface, larger faders, an adequate
built-in mike, and a headphone amp with some headroom. The Korg is
particularly weak in this regard.

Any advice?