I got mhdt Paradisea+.
After 3 days of continuous play (the seller said that he had used it for about 30 hours), it still sounds pretty much similar to C541i and DR700. Most jazz albums I tried, there is hardly any difference. Some orchestral music revealed tiny noticeable difference on C541i.
Using C541i as transport produces a little bit warmer sound with a bit less muddy in full orchestration. But the difference is still very subtle.
Using DR700 as transport reveals no audible difference at all. Maybe changing the digital cable (currently $40 IXOS cable) and upgrading the tube may help a little bit, but I am not quite sure. I'll wait a week and see if it would improve any bit.
Would TosLink cable be better than digital RCA cable if the price is the same?