Although SMB3 is IMO by far the most impressive NES game (however IMO the bulk of NES games weren't actually good or even decent, ports were quite horrible for the time),
I have to say Super Mario World, I like the gameplay better and the graphics and audio are also way better (also better than the Snes All-Stars version, which is also great). I like Yoshi and the Super Mario Cape more than the Raccoon suit.







