I've found that low capacitance cables generally sound cleaner and more extended, although they may lack smoothness. Digital cables are completely different than IC's though and "low capacitance" is a relative term. Often, low capacitance also means high inductance. Before shopping by the numbers, try some at either end of the spectrum and hear what you like and which provides the best match for your gear.
Nordost and DH Labs are usually low capacitance due to teflon insulation and construction.
Nordost and DH Labs are usually low capacitance due to teflon insulation and construction.