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what do you mean by "the best"? Quickest stops? Least noise? Least brake dust? ...? Just google "Auto Brake materials" and you'll find a ton of info on each type.
ZO6s do NOT come with Ceramic pads, neither do any C5s. GM Ceramic pads are available (I ran a set), they do not stop good, dust VERY little (light colored dust also), are hard on rotors, and will fade badly with repeated hard use (not for track use).
I think the best pads are HAWK HPS, they stop better than ZO6 pads and dust much less. I am currently running them (with cross drilled and slotted, zinc plated, cryogenically treated rotors).