First up we have the Rhode Island thrashers, Ritual Sacrifice. A very underrated band, that put out an amazing demo know as "The Inhuman Race." Check out the track below and prepare to headbang.
Next up we have a newer band from the home of thrash in the Bay Area... Laceration. If you're a fan of Demolition Hammer or Warbringer, you'll love Laceration and if you don't believe me just check out the track below.
This band is a bit more well known than the one's previously mentioned however they remain severely underrated and undiscovered by many so I bring you the pure kickass-ness that is MERCILESS.