Hi. Looking for some opinions from you experienced folk. I'll be buying a new road bike in spring and am already obsessing with the variety of choices, frame materials, components etc etc. I see a lot of used bikes on places such as eBay, Pro's Closet and the like. Some are 10 years old or more but are made of carbon fiber, have components like Dura Ace or Ultegra. And they're selling for fairly low prices, say $1200. For the same price I see brand new bikes, with aluminum frames, carbon forks and Sora or Tiagra components. My question: Would a person be better off going with a new bike such as these or with a used bike with a superior build and components. That $1200, by the way, plus or minus a bit, is all I want to spend, and I want to stay as light as I can.. Thanks already for your insight.