I have never heard anything about Leprous, is good, not my cup of tea but is cool.
Regarding Megadeth it's true, I liked most the drums in the old albums, So Far So Good So What is the milk, the old albums are really old school, with a little bit crude sound Killing is My Bussiness, I beleiove that Rust in Peace is one of the best thrash metal albums of all time, This was my life is tremendous, I got Countdown to Extinction in CD format xd. Here is a death metal cover song by an awesome Argentinian band.
Mastifal: https://www.youtube.com/watch?v=LhcxBBGmm1Q
Corrosion of Conformity is awesome, I like the old Sepultura: https://www.youtube.com/watch?v=KK6ZviBToyw
The others bands are not my special drink (?
Death: youtube.com/watch?v=Ab6kgKpk0WI
Destruction: https://www.youtube.com/watch?v=rD6AeteuYNg
Here is a love song for u: https://www.youtube.com/watch?v=YumdAPMMsmw
xd
Regarding Incinerator yeah, I really like the crude and poor sound, I believe that is most.. "trve, old school, brutal" imo.
Regarding Revocation the baldy David dude is awesome.. Is incredible, drummer Phil Dubois and the actual one are terrific, I can't describe the talent and technic they got.