One of my personal favorite Sonic games. The music is amazing, the controls feel super smooth, and the tone overall has a very charming vibe.
However, not all the character campaigns are equal. Sonic, Tails, and Knuckles are fine. Amy is so damn slow and isn't that fun, Big feels pointless, and Gamma is actually pretty ok.
So yeah, the game isn't the best all around, but the good parts are good enough to let me look past em.
...oh yeah the Dreamcast version. Yeah this was better than DX is more or less every way.