Riiiiiiiiiiidge Raceeeeeeer~!
I picked that one.
It's more smooth in frame rate and the 3D effect is noticeable, specially in the menus and in the third person view.
You gain points when you win in the Grand Prix mode that you can spend on getting more cars later.
The Grand Prix mode itself is split into different Events or Missions, each of them has 4 tracks for you to race on. When you win one event, you will be able to choose the next ones that are split in different paths on the selection screen. When you beat the last one in a specific class, you can choose a harder class with more events later. This Ridge Racer will last a long time.
Asphalt wasn't built for being played on the 3DS. It isn't as smooth as RR and it drops frame rate a lot. ^^;