Am I the only one who likes 3d Mario better then 2d Mario? Okay, well for new stuff anyway.
Super Mario World and Bros. 3 are some of my favorite games. But if I had to chose between Galaxy and New Super Mario Bros. Wii, I'd pick Galaxy any day of the week. NSMBWii wasn't all that fun for me, I found it to be a disappointment, but I don't care, play what you want.