Best class for indoor soloing?

[Daldaen]

Charm, root, slow, mez, memblur, pacify

Honorable mention to necro who can do that stuff to undead, and who can pet tank when no charm available and who can root rot easily as well as FD in a pinch.

Shaman/Druid are tertiary with their ability to root / rot. Shamans become stronger at later levels doing this when they can slow and especially when they can torpor themselves.