Over so many decades I've seen countless arguments among Mario fans as to what they value most in a 3D Mario game and which game(s) reflect those qualities most strongly. Some people prefer sandboxes while others like a more direct, linear design. Some want hub worlds between missions while others like a simple level-select screen or world map. The 3D Mario games have a lot in common, but they are also different to the point where I've never been able to really connect the dots and figure out what most people's favorite is on big enthusiast forums like this one. They're all critical and commercial darlings, for the most part, but individual opinions on any one of them vary wildly.
So, I thought I'd make a poll to answer this very question. What 3D Mario game is your personal favorite, and why?
I honestly don't know which game will come out on top for this poll, and I hope that people take the time to explain their vote as well.