Returning Player: Class Duo With Friend

[Itching]

Hi, I'm not sure how many of you remember Itching but I will be returning shortly. I've been gone for a while in the Navy and the schooling associated with my rate.
My friend is planning on rolling a necro on this server and I was wondering what would be a good duo class to level an alt with him. Currently my main is a shaman, so not rolling that class again so I don't have duplicates. The classes that I am interested in playing is Druid, Magician, Enchanter and to a lesser degree Monk and Cleric.
Any insight as to what would mesh up well would be wonderful!