Jolida has a nice DAC that is tubed based (12AX7) that I love. I have replaced the stock tubes with Telefunken smooth plate 12AX7s and LOVE the huge soundstage that was not present with the stock tubes. you mentions other DACs and I've heard the arcam, but have not heard the others so I can't comment on them. I actually like the Jolida better..and it won't cost you a small fortune. I got mine from Walter at Underwood Hifi...he's great. But again...it's just my opinion.
Steven
Steven