For me it's more about composition. The music needs to have some complexity to it to get my interest. Not to say that I don't like simpler stuff but music that is complex is my go to. Big Pink Floyd, Led Zeppelin fan from a kid. There are quite a few metal bands that are musically complex Lamb Of God, Between The Buried And Me, Mastadon. Unfortunately once they go to that guttural screaming I lose interest quickly. Was never into the Hair band stuff a bit too corny and better musicians had already done that schtick David Bowie being one of the first. Huge Tool fan along with APC and Puscifer. There really aren't many bands making good progressive music anymore. Conceptual albums are a thing of the past thanks to streaming media services, people just buy the one song they like instead of an entire album. I also enjoy good guitarists of course Jimi Hendrix, Joe Satriani, Steve Vai and my all time favorite David Gilmour.