Scott speedster s30 or cannondale caad8 105

Sorry I know there are many different topic on bike advice- heres another,looking to return to cycling after 20 years - alot appears to have changed- so advice would be much appreciated-

I have narrowed it down to the above 2 bikes- whats everyones opinion-not been out on either yet -

Has anyone used pedalon cycles- not localbut has very good offer on extras like pedals and shoes.

Thanks for advice

http://www.evanscycles.com/products/can ... e-ec025287

http://www.evanscycles.com/products/sco ... e-ec025501