Help please, looking for a DS game to buy

I'm looking for a DS game to buy and I was thinking maybye

Advance Wars: Days of Ruin

Mario and Sonic at the Olympic Games

Contra 4

Mario Party DS

Super Mario Bros.

WHICH ONE!?!?!?!?!

Please name a game that you think I should maybye get if you think I shouldn't get one of the ones listed.

:D THANKS

Get Contra 4 (if you want to die but still have fun) and Mario Party DS (it's a bit short though. New Super Mario Bros. is 8.0 worthy, but it isn't truly amazing in my opinion. I haven't played Advance Wars Days of Ruin or Mario and Sonic. But I know that Dual Strike is REALLY fun and is chock full of value.

I'm looking for a DS game to buy and I was thinking maybye

Advance Wars: Days of Ruin

Mario and Sonic at the Olympic Games

Contra 4

Mario Party DS

Super Mario Bros.

WHICH ONE!?!?!?!?!

Please name a game that you think I should maybye get if you think I shouldn't get one of the ones listed.

:D THANKS

Colts_Rock

I would go with AW: DoR

IN my opinion there are (mario and sonic) (advance wars) both of them are fun