Show No Mercy is the only Slayer album I really like
Reign In Blood and Seasons have some great songs but get tiresome for me. I hate Tom's voice alot that's why, but he sounds different on Show No Mercy, its cool. It's just raw Bay Area screaming of mindless lyrics about Satan and evil hehe. Very rock'n'roll Thrash is better like that than when it's serious I think. That's the whole point of thrash.
Plus, Show No Mercy has the best sounding production of any Slayer album.