Looking at a Ridley Helium, when I test rode a Fenix locally I was on a Medium. Same geometry as the Helium. I felt a little stretched but I thought it was just the style of bike. I wanted to try a small but it was not in stock. When ordering online they recommended a small so I just wanted to see your opionon. Here are my measurements.
Your Measurments Inseam: Trunk: Forearm: Arm: Thigh: Lower Leg: Sternal Notch: Total Body Height: 32.25 25.25 12.875 24.75 24 22 58 70
Currently have a Defy M/L that is clearly too big.