Plenty of people are leveling in Solusek A. I don't know what your level is, but look up 'Razlo' - an half-elf bard, for he's often leading groups down there. He might soon outlevel the dungeon though :P
Mistmoore pond is just damn easy. No casters, lots of room for mistakes with runners. Guk top is also a great spot that sees groups, but unlike SolA you won't wizards there. The goblin wizards combined with close proximity groups and SoW'ed goblins mean you need a group that knows what it is doing.
And guess how much faith people have in one another
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If you need a cleric for SolA, poke me on Tawa.