I have the DCS bartok and I think the Apex upgrade was a big step forward. Everybody hears differently, but I disagree that it is not musical. In fact, I find it to be a more realistic sound, than audio research equipment, which, to my ears, puts a veil over the music. I think both are extremely well designed and well built equipment, we all have different tastes.
The ideal situation would be to get the Rossini and upgrade it to the Apex. If that’s not possible, I would probably take the Rossini, but as I said, I thought the Apex upgrade was a very significant step forward for both Rossini and Bartók.