The only ones I've played heavily are MP1 and MP8. MP1 is far superior, imo, because it actually takes some skill to win. MP8 is entirely random, and you don't even have a general idea of who won the game until it's announced at the end.
The first time I played MP8, I was doing horrible. I had no coins and I was coming in last in all the mini-games. I placed first in the end. The second game I played I was doing great and owning everybody, but ended up third. The results have been sporadic like that every time I've played.







