That's a shame about the CX1. I can only tell you what i have found personally so is it possible for you to try the bikes out or borrow a friends bike for a while?
It really depends on you and what you want, i like to go fast too but i don't mind trading off a bit of speed to be comfortable when i'm riding. I think the badboy would be capable of doing what you want, it would be for me, it's just the ride would be harder and the ruts and and holes in the tarmac would be tougher on my wrists and ..ahem.... you know what i mean im sure.

I really think you need to do what you can to try them out, there's nothing worse than learning you bought the wrong thing £500 too late!