ICs with great natural sounding highs?

I currently use Acoustic Zen Silver Reference II (XLR) and it's a great IC but the highs have a certain "silver" coloration especially in the cymbals sound. It's not harsh or bright but when I auditioned Cardas Golden Reference ICs recently I was struck with how cleaner and more natural the cymbals sounded - you can hear the real metal when the cymbal is hit rather than a splash of silvery noise. In all other aspects (bass, sounstage, details etc) however Acoustic Zen came out as a clear winner. But I would love to get a cable with absolutely realistic sounding highs as well as great soundstage, neutral mids, detail and bass that Silver Reference ICs do so well under $1000 for XLR. Should I try Synergistic Research? Shynyata? Others?