I own the game, and generally have to agree meeotch's assessment. I tried the Wii wheel out at first, but generally found it to be too inaccurate for my own tastes. I prefer the remote+nunchuk configuration as well.
However, I've found this game (especially the single player) to be far more frustrating than the N64 version (which is the only other Mario Kart game that I have). I mean, when being in first place is a losing
strategy, something is wrong. It's one thing to be hit by a shell at the last second by the 2nd place guy. It's entirely something else to be hit by a shell, another shell, bulldozed, shot by a bullet, shrunk, and have oil thown in you face and wind up dead last all within a matter of 2 seconds. I know you're thinking, "well that's a one-time thing." No. No its not. It's happened far more times than I can count. And the other galling thing is they have the audacity the "rate" you on how you drive, and this rating is negatively impacted by being constantly blown up. Very few sessions of this game have ended without me wanting to rip the computer's face off, which is why I haven't played this game in several months. Playing multiplayer with friends in another thing, but if you plan on unlocking everything in this game, be prepared to endure untold pain and a little something I refer to as "blue shell rape." Enjoy!