Not all "ûber-raaahr" & overpriced, big-ass rarities blow chunks. No really. WYZARD, PARADOXX and CRACKED MIRROR may bore you to tears, but there's some really pricey stuff out there I would actually consider paying the going price for if I had a good month moneywise.
Some faves in the "top-raris" league:
MESSIAH - "Final Warning" LP 84
Simply the best melodic metal album ever. The vocals, the songwriting, the production, everything about this album is just perfect. I cannot hype it enough.
MISTREATER - "Hell's Fire" LP 81
Doomish, ultra-HEAVY Metal/HR never got better. Except maybe for PENTAGRAM. Still, this is another one of those magic lost treasures everyone into Doom & early HM should check out, if only on CDR/mp3. Fuck the bootleg.
BERSERKS - s/t LP 82
One of the finest European "non-UK-nwobhm" albums. Total early Maiden-worship and cover art to die for. "My Life Is Hard Rock"!!!
WIDOW - s/t LP 83
A nwobhm holy grail so not-overrated it's almost underrated. The stunning originality and eerie atmosphere is staggering.
There's more. Your turn now.