Thinking about trading up from my Scott speedster S60 ( 1st bike ) to a S20 or cannondale caad9 optimo 4. In the country, not many LBS to choose from. How much should I pay and if price is roughly the same which one is better value. The S20 is 6 months old.was only ever going to be an entry level bike. At 50yrs young i`m hooked .