As a guy who grew up with the SNES, I seriously want to get this game. When I had the 360, I bought the Sonic's Ultimate Genesis Collection, out of curiosity for the Genesis games I missed back then and because it was pretty cheap. I was troughfully impressed with the Genesis era of Sonic, I simply loved them, then I just became an instant fan of Sonic.
Even if I didn't grew up with Sonic, I've played enough Sonic games to recognize most of the environments and "get" most of the jokes. I don't hate 3D Sonic, heck, I just played through Sonic Colors recently, but it'll be interesting how both interact with kinda different personallities.