By experience the ds version has lots features

Mmmm... It'sa difficult choice. But I'dgo for de DS one because it offers more single player experiences considering both have a very good multiplayer complement, but MK7 lacks of it, but it doesn't make it a bad name per se.

I like mariokart 7 because of it's improved drifting

I love MK7 but i have played Mario Kart DS since i was 4 so it takes the dub because of nostalgia and memories for me

7 has a proper online mode so that gives it victory over DS