On the subject of hairy shredders, do you think Satch looked cooler with hair, or without? I like the chrome dome look. As far as my list of good and bad shredders goes, here's my opinion.
Good: Vai, Satch, Johnson(although not necessarilly just for shredding), Petrucci, and Greg Koch
Bad: Yngwie Malmsteen, haven't heard many others (or many worse)