Selecting Main

Hey guys I am new to muti-boxing, just started a level 4 warrior and a level 4 shaman. My question to everyone out there is who should be the main. I have read a bunch of threads and it looks like I should stick with the warrior as the main and then spec the shaman elemental. Anyone with expericene have a different idea?

Thanks
Zealus

Melee breaks autofollow, so the warr needs to be main, plus he's the tank anyways and will require the most attention