BLOOD demo material is supreme. Actually - everything by band is good. Maybe the 3 first demo tapes, which are sort of joke-noise, they are nothing that special, but since they got the grindcore mode going, it has always been brilliant.
If someone got spare copies of new LP or CD (or the LP+CD bundle), I'd be willing to trade!
Agathocles 1988 demo LP what NWN released is probably their best works. There are many good ones. Despite I have various different formats releases of the demo, just had to get this one too.
None of the material is really noisecore, but if we are talking of dirty old grindcore too, I was blown away by Disastrous Murmur "Skinning Beginning" reissue. Later works of band is fine, specially if you're into dirty Pungent Stench'y death metal, but these early works are supreme. First demo is totally like old BLOOD and old AGATHOCLES:
https://www.youtube.com/watch?v=K3VD-cglgKkThis should be fairly easily available on LP / CD (I got last copy of both formats in store now..)