I'm with PDR here, a MU SL is perfect for fast road riding - I average around 16 mph on my speedo on the road including all waiting time at lights - and probably keep a constant cycling speed of around 22 mph. I'm quicker on the Hammerhead (around 18 and 24). My mate has an airnimal which I love the look of, the Bike Fridays look great, the Xootr Swift would be on my list if I could justify ANOTHER bike and the dream is to own a top of the range Moulton!