The Trek FX series are good dependable bikes. I have a 2010 7.5 FX WSD and it is fairly lightweight (it is heavier than a Madone) and rides well. Mine does have the carbon fork which helps with the road buzz. The only issue I have is with right hand numbness, which I have on all flat bar bikes. This may not be an issue for you. Have you approached your LBS to see if they would be willing to raise the bars on the Madone for you (a sacrilige but doable on some models)? You also might look at other brands that get good reviews such as the Giant Dash and the Specialized Vita.

Good luck,
P2