I am new to road biking and am planning on buying my first road bike very soon. Right now there is a close out deal at lbs caad8 tiagra ? But for another $300 I can get the synapses??? So do you think it is worth the extra cash? I am planning on doing a 2 day 175 mile bike ride in late June. Any help would be greatly appreciated. Also any first hand experience on either bike?