check the eq response and output of the pickups according to the tonecharts of their respective brands.
personally, for Dimarzios, i'd go for the Air Zone/Tone Zone + Air Norton combo to cover just about any genre. Evos and Breeds aren't bad either.
it also helps to try to find out the tonality of the whatever wood the Gio's body is made of (it's most likely agathis). Most of these pickups were designed with specific tones and guitars in mind.