Which class for Dungeon Crawl focus?

[Pyrion]

Can't talk about high levels, but my 30 bard is soloing in paw pretty easily. Charm solo in dungeons is totally viable on a bard even in tight spaces. Sure, you will get hit a bit while recharming, but you do have plate... and you can play heal song in between charms. If you get good with timing you can even anticipate the exact moment to recharm, minimizing or eliminating "getting hit" time.

This might get impossible or very hard at higher levels. At 30 it's totally viable and pretty easy.