In a perfect world, we would all have a quiver of bikes hanging in the garage. Lightweight climber for when you’re headed to the hills. Aero road bike for long days on the flats. And a rig with wider tire clearance and subtly more relaxed geometry for those off-road adventures. Alas, for most of us owning that many bikes exceeds the capabilities of our available disposable income. So which bike is the best bike if you can own just one? The gang from the Global Cycling Network conducted an interesting shoot-out between aero road bikes and lightweight climbing bikes to see which is the fastest. Check out this video to find out what they discovered — and hear some interesting conclusions.