Suggestions on Ethernet cables for Accuphase digital separates..

I have a quick question that hopefully the members here can help me with. I recently purchased the Accuphase separates DC 1000 and DP 1000 and the DAC and Transport are connected by an ethernet cable.  A J45 if I have that correct, is the standard connection for this application. I would appreciate if any members here who own these pieces have upgraded this cable connection and what cable they went to and why. Thank you in advance.....