DAC or CD

I currenlty operated a CAL Audio/Benchmark DAC 1, played thru ARC LS-15/Manley 250 mono's/Mag 3.6. I listen to accoustic jazz >90%. I will have the opportunity to purchase while in Japan (within nxt wk)/save big bucks, and wondered re: the high end digital market ie Audio Note/Accupahse/Esoteric etc. Must have bal out.
1. What would these models improve over present combo.
2. What other brands could I take advantage of.