I feel like Bruec's vocals detract form the awesomeness of the instrumental groove in a lot of songs. In other songs, his vocals are perfect for the mood and I can't imagine Paul pulling it off.

I can imagine Paul's voice on any song that Bruce actually sang: any. And it would be mind-blowing. Anyway, I'm not saying I don't like Bruce's voice, but I prefer Paul's. Imagine Paul's voice on Aces High... bloody hell, it would blow me away!