Why I agonized over this purchase is beyond me. I am completely happy with this bike. A Synapse 4. I have had this bike for 6 weeks now. Long enough to get to know one another. This is my first carbon bike so I did not know what to expect. I was a little disappointed at first. Months of reading about people on "magic carpet rides" and "not feeling anything" was not my experience. Its a bike. You feel bumps. And, I had them weigh the bike before I left the shop. 19 pounds. Slight disappointment again. Now after riding this bike for a few weeks I completely love it. The smoothness really shines when you get north of 15 mph. Something I didn't do during test rides. At that time it wasn't my property and I was really careful. I'm sure I can shave some weight in the future in replacing the wheels, crank, pedals. Aksium wheels, FSA crank, and Look pedals that are 20 years old. Any other weigh savings tips?