Personally, I loved this game. The Wide assortment of characters, Plus the Introduction of the console-specific Added characters, Made this one my Personal Favorite of the series.
That said, I loved listening to the music more then the Game itself.
the only reason I didn't give this collection a perfect score is that it's missing the Added Console-specific Character themes:
The Main Zelda theme, From the Gamecube version,
The theme for Spawn from the Xbox version,
and The Theme For that guy from tekken. ((Too lazy to look him up.))
In an added note, It's Ironic that they continued the series on the system that did the least amount of sales among the three.