Farming Balefort Sewers - Best Bosses to Kill?

[Tamino]

As for the weapons......
Goblin King:
RR Gemstone Talon, MM Gem Blast Staff, FF Gem Battle Sword, FF Gemstone Mace

Trash Heap:
RR Gemstone Auto-Crossbow, RR Gemstone Recurve, MM Gem Shard Wand, MM Gem Star Wand, MM Gemstone Wand, FF Gemstone Sword

Cockaroach:
RR Gemstone Dagger, MM Gem Blast Staff, MM Gemstone Staff, FF Gemstone Battle Axe

Ah, and GoldFever drops cheap Sewer's Scarab. I got two

[Riccits]

Ah, and GoldFever drops cheap Sewer's Scarab. I got two

any of BS bosses drops any SK gear