There's no equivilent of the Propel in 'dales range. If you want an 'aero' bike then yah, obvs. If I was in the saddle all day I'd pick a goofy green Evo over a nicely oranged Propel any day. Or a TCR for that matter.
If I just had to stare at it, then yeah, I'd consider a Propel :)
Sorry to have to say this, but I'd have this over any currently offered UK Cannondale simply due to the lack of green: