For thrash metal bands, I guess that you should like Kreator, a german band, they are also called one of the 3 big thrash metal bands of germany. For further recommendations, check out Overkill, Anthrax, Testament. For more thrash infused different genres (they're awesomer in a way imo though), check out Black Label Society, Damageplan, Machine Head, Municipal Waste, Nuclear Assault, Trivium (this one is mainly metalcore but one or two albums are awesome thrash metal albums)
I'll guess that you might specially like kreator and machine head.