Your statement came off as

"Not good=not much attention."

A lot of the bands discussed in this forum aren't very well known, but they aren't terrible, in the opinions of some, at least. But that's probably not exactly what you meant, so screw it.

You may like Inept hero, Particularly their song Shablagoo, it has some heavy parts. Check it out on youtube, "inept hero shablagoo"

In/Casino/Out is nearly on par with Relationship Of Command, though I can see how minimal experience with that album would lead you to this conclusion.

That said, Acrobatic Tenement doesn't do much for me.

Any recommendations for classic thrash albums? I'm interested in the kind of albums that set the pace for the rest of the genre.

Think you're asking in the wrong place.
Take your query to the metal heads. I have absolutely no idea about thrash metal, sorry.

Yeah I was a bit confused about where the right place was. I figured hardcore recommendations was as good a place as any or am I getting my terminology confused?

Sunny Day Real Estate
Fugazi
Thrice
Brand New
early Jimmy Eat World (i.e. first two albums)

I'd say thrash would fall into metal.
Not a genre Nazi by any means, but the two are pretty dissimilar (hardcore and thrash)
I could recommend you some hardcore I guess, but most of it'd be modern and I assume that's not what you're after?

Hey I'm up for anything. I'd welcome any recs to expand my horizons.

I'd say the metal recommendations thread would be the place to ask about thrash, but that said, and assuming you're already familiar with Metallica's classic thrash albums, here's a few thrash albums I highly recommend:

Slayer—Reign in Blood (if you haven't already heard it for some reason)
Sodom—Agent Orange
Death Angel—The Ultra-Violence
Kreator—Pleasure to Kill
Morbid Saint—Spectrum of Death