I'd like to see pictures of all the stands (19 types?). I like the post and ring, myself. Adjusts to various bike sizes because there is one point on the ring which fits. Keeps bike upright because lock is next to front wheel and frame. Economical of space, especially when not in use! No interference with panniers. Only one bike per side - no bike/bike/bike/bike interference Economical of material / cheap Easy to use/reuse