Wally cans for shit I know is gonna get buffed fast...black white and darks only...the colors suck and the metallics are total shit.
Zylonote for other cheap shit...cheap primer, good for 3 layer stencils that will get buffed relatively soon.
Rusto for everything else that matters.....good color selection, several lines of paint...AND glow in the dark....pretty fuckin dope paint for the price.
Krylon when its cheap/free
Montana.....can't justify the cost YET...I'd save that for canvas or legal wall.