Staff of Wanderer or Staff of Creation are probably good enough that if you got them early enough in the game it would probably be worth considering going full time staff. None of the other staffs are really interesting enough for casters, IMHO. I did play a staff-fighting monk just recently and found him pretty good, though damage ends up a bit poor in the endgame if you don't find an ego staff.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.