I would try the Elrod, if for no other reason that to rule it out or decide you like it best. I currently have 2 Elrod Statements (wall to conditioner and conditioner to amp), 3 Signatures and an EG Epiphany on my tuner/surround processor(for HT). I found that I really like the Elrod "sound" - smooth, open, great bass, natural and musical without losing detail - for most of my componenets, but liked the EG better for my tuner/processor, as it brought out a little more detail from that component.
I would also caution you to make sure you are comparing apples to apples, i.e. the Sig 2 and Sig 3 are designed for different applications. I've also discovered that the different cords on the market are really system-dependent, so there really isn't a shortcut other than trying the cords in your system yourself.
Hope this helped a little.