Class help for duo groups

[Fyreworks]

Let me start of by saying i am pretty inexperienced with the game but i would like to try and get more from it, my situation is that my son (aged 11) and i play the game and we are about to unlock drow and he has decided he would like to reroll a drow and would like me to start a new character with him.

Due to his age we tend to only play together in a group but is occassionally joined my brother on his bard, my question therefore is which races and classes work well together in a small group to get the most out of the game ideally elite on most quests. One character needs to be a drow but the other can be any free to play race or warforge which i own.

I understand warforge sorcs are good solo champs as are battle clerics but i only have experience upto level 7 so far so would prefer not to make mistakes now which will limit us later.

Any advice would be appreciated.

ps i havent played this game in a few years so am very out of date but i dont mind buying spending a few turbine points if thats what needed