I'm looking to upgrade my bike, 14 year old Trek Fuel ex 26". I've narrowed my choices to 2. A used, 2014 lightly ridden (owner was injured and bike not ridden for over a year , Cannondale Trigger 29 carbon 2. Or a new 2016 GT Helion Pro 27.5" leftover. The GT would cost me $20 more at this time, haven't negotiated price of Trigger yet. Warranty is one thing to consider because it's Not transferable. These are Medium frames, I'm 5'7' 160 lbs. Thanks for any inputs.