I was browsing around for a product on which to do a campaign for my portfolio class with my second partner Adam Zeiner. I found this high quality spraypraint brand that graffiti artists and painters love called Montana Colors (MTN Colors). They sponsor successful artists like Shepard Fairey.
And they have other artists that are featured on their website that do sweet work.
And another video from the Montana Colors blog showing Madrid painters/graffiti artists Zosen and Mina Hamada:
(More about their gallery in Madrid here)
These guys are the shit. No two ways about it. I love this brand.