well, I liked MK:DD, and a 7.9 really isn't that bad of a score (I don't know what MK64 got though). I think MK64 had a much better battle mode, but i'm undecided on which had the better race mode.
However, MK:Wii looks really good so far. Even though 16 stages are old, I have never played a portable version of the game, so those tracks will also be new to me. Also, I like that they are back to 1 person per kart. So long as they nail the controls with the remote, then this will definitely be a top 10 game this year.