The Good: Sonic has finally evolved, deep customization and mission system, a healthy amount of levels and things to do, constant mission variety keeps things fresh, takes advantage the of the Wii, controls are nice and easy to use
The Bad: Even though Sonic has evolved it could have been much better, music and voice acting hurts your head after awhile, no co-op mode, custom soundtracks would have been nice
I've always HATED Sonic when it hit 3D with Sonic Adventure. It was just rushed and sloppy and felt nothing like the 2D Sonics. After countless failures Sonic Team FINALLY gave us a good fun Sonic game with SatSR. SatSR has an interesting story where you have to get the 7 world rings to return the world (which is a book) back to order from the Erazor Djinn. Forget the story though it's the gameplay that's satisfying here. While you can blaze through the levels in old Sonic style there are other elements such as hanging from zip lines, side stepping across walls, activating switches, pulling levers, and lots more. This game is also SUPER deep and very long. You have a very deep upgrade system where you can get skill points by beating levels and then gaining skills and equipping them with your Skill Ring. There are hundreds of different skills from speed boosts to smoother side stepping to faster grinding. In addition to all this you can use special powers such as Time Break and Speed Break which are cool looking and very useful. The mission system is very deep and extremely varied and even though you do the same things in the game you never feel bored or like you're repeating the same thing. Missions range from races, to collecting a certain amount of rings, to defeating a certain amount of enemies to not getting defeated at all! The voice acting and music can get pretty irritating and lame but what can you expect from Sonic these days? I also have to mention that the graphics in this game are pretty good. They obviously take advantage of the Wii and you won't see Wii graphics like this anywhere else. I hope Sonic Team keeps Sonic going at this rate and we'll have something incredible.