Ello!

So i have just good computer to play 2xwow same time whit little lag in Org, around 30-40 fps in somewhere else.
amd 3800+ 2.70ghz.
Club3d 7600gt
1,5gt ddr2 667mhz.

So Whats bestest duo for fast leveling, i have 1 shaman lvl 70 so if i take it and make warrior or something for tanking and shaman heals?
or i make fully new charr's?, so what best duo for lvling and playing pve and some pvp :?: