Dave Grohl from Foo Fighters for me.Love how his voice sounds,just a hint of growl to like,complement a song?Can't really explain.It's like vocals with growl but not too much till it's like metal,but a hard rock kinda growl.Like his voice in The Pretender.
For clean vocals, it'll be Aaron Gillespie, drummer of Underoath and frontman of The Almost.
For pure screaming and growling, it'll be Spencer Chamberlain, frontman of Underoath.