HDCD 'best one box player' recommendations?

Seeking your recommendations for a high quality one-box CD player with HDCD decoding. Currently I have the EAD Ultradisk 2000 MKII which sounds great, albeit an older technology. I am considering upgrading to a player with newer DAC's & possibly upsampling; such as a Cary 303/300. Please suggest any other machines that I should audition? This is for an Accuphase separates rig, so high quality is definitely a priority. thanks for your input!