I just need some help on choosing pickups on my journey for tone. I really like Steve Vai's and Joe Satriani's tones (steves more), but i also like the sound of gibson '57s. I really want versitility, which i know the gibsons would give me, but i'm not so sure about the dimarzios. I'm looking for a silky smooth distorted sound with lots of sustain. Something to play lots of fast sweeps and arpeggated passages. Opinions? Advice? thanks