The two you mentioned, I don't think they have much use. Angurvadal if only for he negative plane protection, however, the strength bonus is handy for low THAC0 characters.
I think that the White Dragon Scale and the Axe of the Unyielding +5 are definately worth the mention.
“The world breaks every one and afterward many are strong at the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially.”
I never found the chain to be anything special. For Haer' Dalis, Jan's armor is ideal as the AC loss can be made up with Spirit Armor.
“The world breaks every one and afterward many are strong at the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially.”