Wold are good, they're Canadian black noise.

Dig the Watchmaker thanks FBF, listened to Kill Whitey and liked it as well. I usually like the more non-doctrinaire grindcore, stuff that probably isn't 'pure' grindcore, like Prowler, Pig Destroyer seemed to have a bit more structure to what they do and Siege are my favourite of the original bands, agree about the diminishing returns but I find that par for the course with the genre, usually the bands make one major statement and either repeat themselves or just decline.