Last year I played a lot STK 0.7.3 and I liked it a lot. I played with my little cousin and had a lot of fun.
But with 0.8.x coming the game experience has changed. The most important changes I noticed are the physics, control and sound.
The music was much better in game menu and in some tracks. Also I enjoyed the sounds of collision more. New physics is less funny, maybe it has become more complex. And control is what affected gaming experience the most, and in my opinion it got worse (and I'm not saying that it's easier or harder to drive, but new kart control style is not suitable or doesn't feel natural for such game).
The story mode is an improvement, and of course I'm waiting for the network multiplayer feature.
So I suggest to revise the changes that happened after 0.7.3 version. If there is a discussion of game menu music, I vote for the 0.7.3 variant.