I happily used the Platinum (balanced) with my Theta separates until switching to van den Hul carbon (The First Ultimate or The First Metal Shield RCA, The Second XLR). I use these for all my analog connections, but find I also really like what they do for digital, which sounds more natural to me than with the metal cables I've tried, for whatever reasons. (There's a reviewer article that investigates this subject linked from the vdH website.) I haven't heard the Stereovox cable.