The major distinctions that I see between those two CD players are
1. the Marantz has a front panel USB connection for thumbdrives, iPods, etc. (the HK has no USB)
2. instead the HK player has SPDIF digital audio inputs (the Marantz has no digital audio inputs)
3. the HK player has XLR analog outputs (the Marantz has RCA analog outputs)
Of the two, I'd probably pick the Marantz, but I'm a biased Marantz fan.