I've been practicing dualboxing and keyclone now, and I'm to a point I've been wondering. My goal of dualboxing was to play a Hunter + Shaman, for dailies, pvp/arena, and to level in wotlk. I've used the RAF to benifit from triple exp from mobs & quests. I've noticed that, if you have a highlvl in your party, you get barely any exp from mobs, and the exp from quests seems to be the same as being out of party, I guess your chars have to be in the same range to make the exp worth 3 times. I planned, to make my Shaman benifit from 3x exp, to level it together with a rogue. The shammy is 14 (boosted her a bit) and the rogue is going to hit 14 today as well, but I wonder if that's faster then just boosting my Shaman in instances? The rogue is just only to have some stunlocking fun, I have no big plans for her.

I'm still new to dualboxing therefore I ask the experts what is the fastest: dualboxing with same lvl char or boosting.