Quick depth adjustment?

Is the reason the skil is so sought after because of it’s depth adjustment. I have heard it is all it’s qualities: weight, feel, motor, quick depth. I want to hear from the veterens here it they were to pick the number one quality of the skil? I am in search of a cheap old skil just to find out the hoooplah. And I do agree, it tis the shaper and not the planer…