If you're on a sulky being pulled by a walk behind the pistol grips can be a bit low and some are hard to squeeze. Your hands are also in a vulnerable position for banging into stuff like fences and building corners etc. The Exmark ECS controls are up higher and keep your hands in and protected so they don't get beat up. I've got 11 seasons on my Turf Tracer HP, which is equivalent to the S series now. Reverse is a pretty stiff squeeze and difficult to do for any length of time and going forward can get tiring on challenging terrain. The do have control systems that there's no squeezing (Hustler) and Toro has one out that's similar to a zero turn control.