Bike Choice

Ok I know the Triban brand may not be the best of choices to some people here, but money don't grow on trees and its the best I can get for what little I have - and that's a large amount of money for me thank you very much!

I have £500, well by the end of Feb. I can't make up my mind between the following:
1 - The B'twin Triban 3 with Keo Classics, Mavic aksium wheels just make it £500
OR
2 - The B'twin Triban 5 with carbon/aluminum frame £499

What do I do????