Since hammerdins can do ubers with 1 pt smite, the other realistic options with both AoE damage and being uber-viable are:
kick/trap sin (trap focused) with static ctc weapon and gear swap for ubers (res stacking, lt source). Good cleaning speed if well played. Multiple weapons to use depending on situation, from rift to azure to beast to stormlash/Cmoon...
javazon with swap for ubers (res stack and cb/ows/lt setup to jab vs mephi). Most damaging char with lighting fury for packs and best boss killer with charged strike, easy to use. Lacks teleport speed, thats the most important con.
Both require a tanky infy merc for both pvm and ubers.