Stand-alone recorder vs. interface (Tascam vs. Apogee)

[macula]

Which one is better with regard to sound quality alone: The Tascam HD-P2 standalone recorder or a 2-channel interface such as the Apogee Duet or Minime?

Again, I am interested in a comparison of the pre-amps and A/D converters (sound quality) alone, not any other features.

I will be recording acoustic/classical music. Fidelity is a TOP priority.

Thanks.