Originally Posted by croy
Trying to get back in the saddle and looking to replace my centuries old cannondale to do some riding in the hills around home...moderate mileage...mostly for conditioning..can anyone lend advise on the pros and cons of the various models that I have listed here: specialized-tarmac and roubaix.....and cannodale-synapse and caad9 5
First let me say "welcome" as well!
I don't know much about those Cannondales, but I have been researching the Specialized road bikes.
Probably the first question is, what's wrong with your ancient Cannondale? Many people in 50+ and elsewhere on the site are using -70's thru present day bikes as primary riding. Bicycles of all ages respond well to light or heavy maintainance. Basically there's nothing "wrong" about getting your old bike checked over and overhauled, and riding it. It would cost $200 to $300, should have it working as when it was new, and then you could see how it suits your new older body.
Between the two Specs you mention, I would pick the Roubaix for my 55 year old body. I don't want to be forced to lean down low, and the Roubaix has a taller head tube, allowing the handlebars to be placed higher. It also has a less-responsive more-stable steering that I think I'd want for longer rides. I think I'd like not to have to be quite so attentive to steering after 40 miles in the saddle. I also know from my favorite steel bike that I want better shock and vibration isolation, and that's what the Roubaix is designed for. They're also said to be nearly as fast as the racy bikes like the Tarmac.
I am a little put off by the high China-made content in the Specs and in their proprietary parts.