We all know that "scene" is created not only by big and famous names but also with a lot of bands that put out only demos or EP. I was aware of that fact, but never really attack importance to it, until i've read thanks list on Wrekking Machine - Mechanistic Termination. Half of the names there were absolutely unknown to me f.e. Bacchus (now i know, thanks to MA, what is this). So this is why i have started this topic. What are greatest bands from Bay Area that never recorded an LP, but were a part of the Bay area thrash scene of the 80? (or not recorded an album in "thrash metal golden years" - 83-94)? What demo of these bands do you especially recommend?

Ulysses Siren is an obvious mention, and probably the best one among them all.

yeah, ulysses siren is quite well known, but besides them?:)

Hellhound had a few demos and some compilation albums of their demos.

http://www.metal-archives.com/band.php?id=15494

Someone in the thrash recommendation thread mentioned Assassin's Blitzed Resistance and it's really good aggressive stuff, worthy of Baloff-era Exodus. Speaking of Baloff, check out Piranha's 1988 demo. The song Alone We'll Survive is a classic.

Hellhound, Assassin and Piranha are all good recommendations, yes.

Damn, all suggestions I come up with turn out to be from L.A. Dissenter (US) is a personal favourite from there, and I suspect that the 'Evil Within' Catalepsy (US) would originate there as well.

EDIT: Damnakleez! An often overlooked '86 demo, one member later joining Piranha. Not the best production obviously, but good enough toa make out nice riffs and tempo! Dark Angel sure come to mind.