The galaxy games are the best 3D platformers I have ever played, and also the best games on the Wii. Really they just perfected Mario in my mind. I honestly don't see how Nintendo could top those games.
For Me:
SMG2>SMG>SMS>SM64>SM64DS>>>>>SM3DL
I hated 3D land, it felt like a 3D version of the bland New Super Mario Bros.