Big 4 Order-of-goodness list.

Stupid thread is stupid. And Anthrax owns, who cares if they did some rap metal? (Only 2 songs!)
 
Megadeth is my favorite. They've always been superior to Metallica as far as musicianship and song writing goes, in my opinion. I LOVE their first 4 albums, which were all spectacular. After that I lost interest. Even since they went back to Thrash, the song writing is pretty bland and their sound is really robotic and too perfect. Metallica was damn good, but they were a little too straight forward to me. Their first 3-4 albums are all masterpieces though. Slayer is Slayer, and Reign In Blood literally defines Thrash Metal. Anthrax is alright. Spreading The Disease and Among The Living are good, but they get old. Heres an interesting topic. Big 4 of Death Metal? Death, Deicide, Morbid Angel for sure...Cannibal Corpse or Obituary could easily fit in as the 4th.