Out of those, i'd say battlebard....
then again.. warlock/cleric seems interesting

Saw a warlock in action today... and boy, did he just run and dot monsters...
warlock/cleric..
I myself are using wizard/cleric combination. 1-2 hit everything, allthough the cleric side dosnt realy help much other than a bit healing, ressing, and some buff I cant put on myself other than someone in my party..
but...
errr
....
go with warlock/cleric or battlebard..
Gues my final answer is.........
Battlebard ;D