I actually hated Race To Win but loved the rest. I wish the circulated game rip of the soundtrack wasn't so weird and cut off at the loop (though the tracks do tend to blend into one another surprisingly nicely when listened in order this way).
I agree with Jez. Race to Win sucked, but the rest of the songs were great. My favorite is Sunset Forest Act 1 (gotta love the guitar on that one) and Blue Coast Act 3. And TBH, I think Sonic Rivals 2 had a better soundtrack than Sonic Rush.