I haven't had the cold start problem with the 700 so far. The 660 was a beast to start in cold temps the first start of the day. Using synthetic oil seems to help.
Probably doesn't get cold enough where you are but here when it gets below zero it seems to happen especially when windy. The guys have switched from ethanol blend to pure gas and used a little fuel antifreeze like HEAT which seems to help if it is a gas line freeze up. Other than that problem the Yamaha's are really nice bikes.
