Independent suspension is the finest and provides the best ride. If you've ever had the chance to ride a solid axle trike you may not want one. A solid axle trike is not as nice, if you take a curve in the road you get pushed to the outside and feel like you'll be thrown off and even with good shocks the ride is okay. It's like comparing the ride of a Ford Pinto to that of a Cadillac. Trike have improved over the years from acceptable solid axle to independent suspension that has improved ride quality. Motortrike is the only company that offers solid axle for some bike, but the rest are independent suspension.