I have four Megadeth's records:
Rust in Peace, Coutndown to Extinction, Youthanasia and Cryptic Writings.
I think that Rust in Peace is absolutely greastesr of 'em, but CtE is not bad neither.
Youthansia is also good, but... Cryptic Writings - what a disapointment.
But still, Megadeth is one of the greatest american heavy metal band...
But it can't beat the finnish metal bands... >:-D
