New Dual Boxer, which is better?

Hello guys, I'm a long time reader, first time poster on this forums.
I've read about pet boosting and instance boosting.

My main account has a [A]Hunter 70 (geared[T4+]) and a [A]Rogue 70 (geared better than the hunter).

On my new second account I have a Pally 10 I want to powerlevel.

My question is:
a. Would it be faster to just run myself through all the instances?
b. Would it be faster to just not dual box and quest using quest helper?
c. Would it be faster to use the hunter's pet to boost myself to 30 or so and then do something else?

If it's faster to instance boost, is it a big difference from doing quests alone, and also, would the hunter or rogue be better?

I'd appreciate any input on this, even if it's not listed on my questions, I just want to level up my paladin as fast as I can using the resources I have atm.

Thanks in advance for your replies.

if you are on a PVP server it will be faster to stay in instances. If you are on a PVE server do a mix of Instances and Quests. Do the quests that you know well that you dont have to thottbot or whatever. And all the other times that you dont know where to go.. just go instances. Either of those is a great PL'er only downside to each is small. Hunters / Ammo Rogues / Bandages

just pick the one you want to play for that time. Do some on Rogue and some on Hunter and base your decision on that.