25 years ago I would've said Metallica... at that time I would've willingly taken a bullet for any of the band members. Haha.
But then came the Black Album (which is not a bad record in and of itself, I'm just sick of it), the sub-par LOAD and RELOAD combo, the symphony orchestra, and, well, ST. ANGER...nuff said... They've redeemed themselves somewhat with DEATH MAGNETIC but still, it's not the same.
On the other hand, Megadeth have been truckin' along quite nicely, even their sub-par records (i.e. CRYPTIC WRITINGS thru WORLD NEEDS A HERO) have their share of listenable tracks on 'em, and Dave Mustaine seemed like a really cool mo-fo when I met him two years ago so nowadays I'd have to say I'm a member of Team Megadeth.