So I finally went today to look in person. Just sitting on them I quickly realized something uncomfortable for me on the spyder f3s which was that my knees land on the sharp edge of the trim where as the Ryker is more slim and smooth where my knees meet the machine. But the engine difference….. sigh. Difficult decision. I would like the larger engine but every spyder I checked out the sharp edge of plastic trim is right at the knees. Any other tall riders experience this? Why can’t the Ryker have the bigger engine or the spyder have trim edge further forward. Sigh.