Hi to everyone!

I decided to buy my first road bike.
My budget is 1.500€ max, because i will buy equipment (bike computer etc), too.
Because i want to train seriously and maybe to take part in some races in the near future, I try to find a bike which can combine all the previous.

I have some bikes in my mind but i am confused!
Canyon Ultimate cf sl 7.0
Canyon Endurace al 8.0
Vitus vitesse evo 105
Cannondale caad12 105

I saw the vitus vitesse offer from chain reaction. The price is excellent but i am confused about the the weight. I can't uderstand how the vitus is heavier than ultimate although the vitus has lighter frame and wheels.

I suppose that the shimano 105 groupset will be ok.
Mainly, i focus in a good frameset so i will have a base for future upgrades.

Any suggetions??? Any help...

Thank you very much!