Machetazo are one of my favorite bands. Sadly they have just announced their disbanding.

They play classic Carcass-clone goregrind, and do it very well.
I have a soft spot for Carcass-clones, General Surgery, Haemorrhage, The County Medical Examiners and Impaled to name some of the best.

http://www.discogs.com/Machetazo-Mundo-Cripta/release/1827038