How good are "Oppo" players?

I'm in Australia, and have heard quite a few good things about Oppo universal disc players, but they're not easy to find here.
They seem capable of playing just about everything, and I want a HDCD/SACD capable player.
But how do they SOUND? Are the DAC's, and other components, up to true high fidelity standards, or are they just a compromise?
Prefer responses from owners, not sellers!