48+ Enchanter/Shaman Charm Exp Duo Tactics/Locations

[Ephirith]

My brother and I play an enchanter/shaman duo and we're currently level 47. We've been charm duoing since lvl 12... basically my brother charms while I help with roots, heals, and finishing mobs off when required.

We've been in Sol B since 41 but now it's starting to go LB and I'm not sure I want to do BnB. We figured maybe next we'd go to CoM and try moat or goo haus.

There's one thing I've been pondering a lot lately though: What's the anatomy of a 50-59 enchanter/shaman exp duo? We're getting to that level where mob HP is really starting to balloon and I can imagine it's going to start taking forever for unhasted mobs to beat each other to death.

I thought maybe we'd try transitioning to slow tanking to bring higher dps to these bloated hp pools. Enchanter hastes and arms a pet, I slow the mob, and I heal either myself or the pet while dual wielding hasted pet rips it apart. I don't have a fungi tunic so I'm reluctant to tank even a slowed mob.

Any suggestions regarding good duo spots or the most efficient way for us to kill?