I saw Moral Crux in the late 80's when their first album came out and they were a breath of fresh air back then--my best friend loved that record. I was bummed that they got swallowed up by the pop punk thing in the 90's but they probably didn't have any decent songs left in the tank after ten years anyway.
I never owned anything by JR but I remember them starting out as something pretty aggro in the early 90's on a comp or something, not remotely poppunk at all.
Darlington looked completely abhorrent and I've never heard them--funny, they were the band that even people who dug that scene stepped all over.
-Ryan