Best riff maniac ??

I like

Tore Ostby (Ark and Conception), Jeff Loomis (Nevermore), Mike Romeo (duh), Gus G. (Mystic Prophecy, Nightrage, Firewind), Dan Swano (Nightingale, Edge of Sanity), Jim Matheos (Fates Warning), Mattias Eklundh (Freak Kitchen), Dave Mustaine,

 
Jon Schaffer was one of the first ones mentioned amanda :p

I'm gonna have to go with Dave mustaine (megadeth), Christofer Johnsson (therion), Alexi Laiho (Bodom), Jeff Loomis (nevermore), Chris Broderick (Jag Panzer)
 
Even though I like most of the guitarists mentioned, I don't really identify them with "riffs." (Maybe the definition of riff I'm using is outdated...which is possible since I'm old...) One guitarist I consider to be a master of riffs is Manni Schmidt (ex-Rage, now in Grave Digger).
 
I know! The Coming Curse, Dante's Inferno, Stormrider, I could go on forever. Also, I should have mentioned Loomis. I heard that guy tried out for Megadeth at 16 and blew Mustaine away, but he was too young and Marty tried out the next day.