Defy Advanced 1 2015 or Cannondale Synapse Carbon 5 help?

I've got a carbon Ultegra Synapse though it's last year's rim brake version, which it seems is broadly the same frame. It's a fantastic bike, and I love riding it.

I had a go on last year's Defy, and it was nice, but the Synapse felt like it had more 'go', and it felt like the one for me.

Hope that helps.

Hello,
Having just the same dilemma myself - with the added left field choice of a Van Nic which I'm hoping to ride in a few weeks.

I've just spent the afternoon on the 2015 Cannondale (loaned to me by my LBS Cyclesense) & was very impressed with the whole package. Seemed to accelerate nicely on the flat, was stiff enough up the hills (but notably more flex than my current aluminium frame) and particularly nice on descents. Ride position was a little more "upright" than I'm used to. The Shimano 105 worked fine - I'd pick out the brakes and front mech as being the strong points. It looked nice in black & white.

Re the Giant, I've yet to ride one but I'm not an early adopter of new technology & am unsure over disc brakes on road bikes - I think a couple more years of rim / spoke /axle development will see some step changes.

I'd just speak with your local shop, get a couple of rides and choose the one you enjoy most.

There's a review of a 2015 Cannondale Synapse in cycling plus this month - the frame is the same aside from having disc brakes and it got 5/5 - the same frame won "bike of the year" in the same magazine last year. I'd go for the 'dale but ride both and see which one you prefer..