Doom&Boom - I totally know what you're saying. I was the same way when I was two boxing it. 4 boxing is great fun, but I really like companions too. If they were just a little stronger then there would be no reason to 4 box.

I think for leveling, 2 is way faster than with four. You can't really do flashpoints with two but that's it really. Dual boxing is really the best way to get to 50 the fastest.