Align seems to be the motor of choice. The 420LF and Align 25A ESC are serving my well so far.
Some people are trying the 430 now on their #36's too.
I wouldn't recomend the Walkera brushless motor or ESC, from what I've heard the motor runs VERY hot and the ESC quality is questionable. Not worth the risk just to save a couple dollars.

Can't help you much with a charger as I don't know whats available in the US. A lot of Aussies(myself included) like the 'Swallow advance' charger. It handles Li-PO's Ni-Cad's and just about everything else.