Who is the better band? I would say at their very best ('Kill 'em all', 'Ride the lightning', 'Masters of puppets') Metallica can top Megadeth although Megadeth come very close with 'Rust in peace' and 'United Abominations' and overall Megadeth have a consistantly good output compared to Metallica's more patchy portfolio. In conclusion for the first three albums Metallica > Megadeth, for everthing since (except arguably risk) Megadeth > Metallica. What do you think?