Actually, much better than I hoped for: the Planet 2K is another animal, much better in detailing the transients and with a "rounder" but clearer low end than before. In all fairness, I have to acknowledge that I (also) upgraded both the Planet 2K and the DAC2's power cords to PS Audio xStream Prelude and that has added a bit of depth to the soundstage.
As for my next move, I am dying to join the SACD ranks: any thoughts on achieving that while keeping the DAC2 in the chain (I'm thinking affordable transport)? I love this little black box so much!...