If your kids are active in tumbling and gymnastics and or you want the "very best bounce" from a trampoline, then by all means go with a Rectangle Trampoline. By design, a rectangle trampoline will give you the highest bounce of any trampoline. A rectangle trampoline does not have a "center" spot in it and therefore, it does not control your bounce, by putting the jumper back into the center of the trampoline. This allows the jumper full control of the placement of their jumps. The long straight sides allow the jumper to do tumbling routines with ease. A rectangle trampoline is great for gymnastics and cheer leading routines. A Trampoline Enclosure is highly recommended with any aggressive jumping style routines to help prevent the jumper from leaving the trampoline unit.