Slayer is thrash :p
Most of the stuff I listen to is the original heavy metal or 80's/90's thrash. Sometimes I throw one or two classical pieces around as well (Vivaldi and Beethoven, mainly)
Favourite bands are Megadeth and Iron Maiden. Also Nevermore. Nevermore is amazing. I also listen a lot to early Metallica (again, early) and some Slayer once in a while. And Pantera too.
Black Sabbath and Motorhead are other bands I like but don't listen to that often.
I'm not much into death metal and metalcore and such - screams and growls never really appealed to me :/