Which class for Dungeon Crawl focus?

[Hrothgaar]

To all of you veterans out there:

As I love to delve dungeon but my timezone is a little bit on the low(est) pop side on p99, I am looking for a class that I could take solo into dungeons and fight nameds in it.

Reading about it has left me with the shaman or enchanter for this but which of these classes is more capable in these regards and has the broadest possibility of dungeons to survive in?

(I would like to focus the advices just on this area, any leveling speed, leveling difficulty, equipment / spell costs etc. are not that important as I am in no rush with the char development.)