I use ezPDF (was free on Amazon App Store, but only 99 cents normally), and it renders graphics-heavy retro gaming magazines perfectly! I do have to zoom to read some small text, but I had to pretty much do that with GoodReader on the iPad anyway.
Would something like that read fine? Apologies for a pile of questions: Nook Color isn't available here in Canada, and I was thinking of taking a bus trip to Buffalo to grab one of these if the Nook is worth it.