Don't know too much about Anguish Unsaid. I was about 13 or 14 when I first heard them, and I remember the band I was in at the time, a horrible blend of sludgy hardcore and grind (guess that's what we all call "power violence"?), for awhile became heavily influenced by the fast, chaotic sound Anguish Unsaid presented. The band formed in 1995 and last for about 7 years, leading to them splitting in 2002. I only know of two full length records that they put out and I do have them posted below. The only other thing I recall about Anguish Unsaid is at the Cornerstone Festival one year I really looked forward to seeing them but ended up not for whatever reason, but did stop by the Bettie Rocket Records (the label they released both records on) booth and spoke with some girl about wanting my band's demo. Looking back I'm so glad I never sent it. So, if you're into the weird artsy, chaotic, fast, grind stuff from the late 90s, check them out. At times they remind of Refused also, which is never a bad thing.
Wanting...Waiting (1999 - Bettie Rocket Records)
The Chronicles of the Restoration of the Church (2000 - Bettie Rocket Records)
