Orbis Tower 3rd floor

Orbis Tower 3rd floor - Suitable for All physical classes level 40+.
Monsters Dark Leatty (Lv 33, 1100HP, 65xp, weak to holy)
Notable Drops Pretty much none.
Pros For some reasons, this place is faster than kitties
Dark Leatties have worse accuracy

Cons Less money
Can't use return scroll, must walk back to El Nath Climbing is annoying Dark Leatties do more damage than Kitties

Comments Eh, works well as a bore-breaker for Kitties I guess. The profit sucks, but you're training at the same rate or faster than kitties at least.
http://strategywiki.org/wiki/MapleStory/Training_Guide