For the first three none of them have wheels which stand out from the others - the Cannondale and Veloce Wilier wheels are slightly more expensive I think.
Don't know what the Cube has on it.
Of the frames none of them are particularly aggressive or ridiculously sportivey. 2 wheels is right the Cannondale is marketed as a bit of a sportive bike but it's still pretty close to standard road race geometry - while the Wilier offers a fairly old school road race geometry - not a lot in it. Depends on your size but the Cube looks to be along the same lines.
If you are planning on racing it stock I'd look at the wheels on the Cube and that might sway me - not sure what the cost difference is between the bikes. If you could pick one up maybe £250 cheaper you could get a second pair of wheels to keep for best or if you have a problem with one so you aren't off the road. There's an element of personal preference there - how they ride, colour, image, shape of the hoods, campag or shimano etc which none of us can really advise you on.