Well, most of the people opt for elliptical bike models that are rear drive. Typically, rear drive ellipticals have a smoother feel. This is due to the fact that the drive axle is located at the back of the machine. Additionally, they also enable better inertia, thereby delivering a greater motion with a smoother feel on the pedals. But, rear-drive elliptical models are more expensive in comparison to front-drive elliptical models. Although front drive models possess a little rougher feel, some people prefer opting for these due to their affordability. So, in the end, it totally depends on your preference and budget.