A 1-box player I'd recommend is Audio Research CD2. You said you listen to aggressive music, CD2 has tremendous bass control and very good overall resolution without sounding digital. You can have CD2 for under $1500. Built like a tank. For separates, I had very good experience with Sony S7700 dvd player used as a transport driving Bel Canto DAC2. Also very smooth and non-fatiguing combo. Get good digital coax cable for it. Don't disregard the claims that there are differences between digital cables. There are very audible differences between various cables. You'd have to experiment with that. So with S7700 and DAC2 you are looking at around $1000 on the used marked. That leaves $500 for used Audience PowerChord for the dac and Stereovox HDXV cable. Just my suggestions. That's the route I would take. Best of luck.
P.S.
Audio Mirror D1 or D2 non-OS dacs are pretty decent given their price, but these dacs in their stock for do not hold a candle to Bel Canto DAC2, at least in my system.
P.S.
Audio Mirror D1 or D2 non-OS dacs are pretty decent given their price, but these dacs in their stock for do not hold a candle to Bel Canto DAC2, at least in my system.