This might sound silly but I'm asking for opinions. Looking at buying a new bike, used, and am at a decision making point. So which one or neither is my question. 2007 cervelo soloist time trial that has been converted to road. It is full ultegra but the shifters are 105. I've seen it looks super clean rides smooth for 1000 cash. Or 2006 cannondale synapse with dura ace and ultegra. Same thing great condition for 750. Any tips? Or should I just wait and continue with my ride which is 2009 Fuji roubaix pro with tiagra.