I'm 52, in fairly good shape, and am thinking about an endurance road bike. Comfort is very important to me, but I don't want to compromise speed too much. I cannot afford a $3,000 plus bicycle, so aluminum makes more sense. I'm looking at the Giant Defy 1 and the Cannondale Synapse Disc 5 105. I've heard bad things about the wheels on the Giant, and mixed reviews about the disc brakes on the Cannondale, but I take online opinions with a grain of salt. And would the Cannondale be heavier? What do you guys think of these two bikes? Which would you buy and why? Are there other bikes I should consider?