I have had both trailers. The dual axle is better in the sense of safety. My single axle for some reason ate up tires due to weight . I never overloaded the trailer but the tires just never could support the weight for long drives.I believe the design rim size is just too small so I am planning on reversing the axle to obtain more clearance for a bigger tire size. The dual axle is more expensive to maintain and the tolls are doubled. If you plan on going to northeast stay off the toll roads as they will be expensive with dual axles. By the way, no trailer tire is designed for 65 mph so beware.