Remote power supply connection.

I was reading another thread on the issue of interconenects, power cords and the like. We all have heard the experiences with upgraded power cords, interconnects and speaker wire, but my question is for remote power supplies. I have a seperate remote power supply for both my per-amp and amp. I have upgraded my other cords with very good results, but I've never read or heard of any after-market power cord from the supply to the unit. Has anyone had any experience with this issue?