But, like my post above indicates, Youthanasia is clearly the best them.
Truth, my brother. Truth.
Mustaine's voice peaked at Youth/Countdown and has gotten steadily worse ever since.
Just got the live Rust in Peace CD/DVD. Was pretty impressed with Mustaine's vocal, though I suspect its rather heavily overdubbed. Which I don't mind too much, as long as it makes for a more pleasurable listening experience. Mustaine is pretty much the worst frontman as well. Broderick and Ellefson do most of the work when it comes to engaging with the crowd.
Mind you, if I had to play super-tech riffs and sing over the top of them, I wouldn't have time to molest the crowd either.