Well, now I got the stock interconnector that came with one of my 3 amps (i forget which), a silver plated copper interconnect, and just an hour ago a silver interconnect. I have to say wow, even that makes a difference. Doesn't have to be expensive at all. The silver interconnect totally blows away any warmpth that I was complaining about in the jh16's, and now its actually a little too bright. Mind you I also got a silver iem cable connected so now its a pure silver system. The stock interconnector though had the most bass impact and body. The spc had smooth vocals but surprisingly a tad less bass impact (But in all fairness it only cost $7.00 free shipping).
So from my experience:
silver: brightest and most detailed of the 3. However bass is noticeably thinner, noticeably less rumble. No matter how much I try to eq it, the bass won't come back. If I eq the bass regions, the bass distorts. However the other 2 ic cables don't distort when I eq the bass...
spc: Vocals are smoother and less piercing, and sounds a bit more realistic. However bass impact is slightly less, but it could be just my perception due to the vocals being a bit more forward. Treble takes a step back though, certain high notes sound a tone(is that the right word?) lower, and there is less detail if you pay close attention, especially to strings.
stock: good detail, best bass of the 3. I think this is actually the most balanced of the 3. kinda surprising because I think it's just copper.
overall im going to stick with the silver for the brightness and detail. The bass is still there, just not all of it. But it's a good tradeoff to get rid of the warmpth of my jh16's. I'll really miss that rumble though.
I'll shut up now seeing that this is a jds labs c5 thread. But in my defense, it is somewhat related because I'm comparing them using the c5.
edit: this is all done with the c5 bass boost switch on, of course. I can't live without that feature. That being said, the silver may just be wayyy too bright without the boost.