I have used Elrod Statements on my power amps. Great quality, but a total pain to integrate into the system due to their size and inflexibility. I've recently gone back to a pair of Argent Audio Brujo HC for the amps, with extremely good results (i.e. at least as good, and in some respects better). They're also a lot easier to bend around corners.
I have EPS 2 Signatures on my digital boxes amd preamp. I just put a well broken in TG Audio SLVR onto the preamp, and prefer it to the Elrod. The SLVR sounds livelier and cleaner. The Elrod sounded a bit soft in comparison.
So the moral of my story is that you can get too caught up in following a single path. There are power cords out there that may outdo the vaunted Elrods in any given system. I have another pair of TG SLVRs on the way, and that should make for an interesting comparison, both to the Elrods and the Argents.