Who has a set of adamant armor (without cheating) and how bloody long did it take you to get it? I've spent upwards 5 hours in that blasted room and I've only fought those stupid pink puffs three times with no luck. The only joy I get out the whole experience is pretending that those pink puffs are power puff girls and my party is laying a beating on them.

Also, what are some other really rare items/weapons/armors that you can only get from battles and how useful are they. Here's a couple I've gotten:
Imp summon = useless
Bomb summon = pretty good (0 casting time and decent damage for 10MP)
Dragoon lance = great against dragons