Any 80-90 boost guide? No questing.

[Apatheist]

It's worth doing the first quests (on the boat) for the free weapon. After that I just queued for randoms. The only thing I did differently on my second group was I stopped doing instances at 89 and stated the prerequisite quests for Klaxxi/Golden Lotus dailies. Since you have to do them anyway and they give some decent i430 rewards, might as well do them while you still need experience.

Boosting at near max level is just queuing for randoms, really. If you have a well geared level 90 tank, you can smash normals fairly easily. It's not really worth the effort, though, since normal instances are so easy at equal level. Better off making a 5th character and getting that extra toon to 90.