It's a hard one... i like both and no matter what you get you'll love it. I love the sound of the scoob. As for performance, straight line, just as good but the evo seems to have the edge in the twisties. Dunno how that works, as grant says the scoob seems to have the best centre of gravity but in most tests the evo is slightly quicker not that there is much in it.
Just ask Bill and Colin.
For me,i rekon the evo would be more straight forward to work on aswell, especially if your doing an engine rebuild (don't let playsatan or coulty hear that).