ajtj, I disabled the scratch pad on my laptop in favor of the mini-mouse. I was always accidentally touching the pad and doing unintended things. On the other hand, my wife - with smaller hands - loves them.
Every touch pad that I've ever come across left me unsatisfied. The one on my work crap-top is so sensitive, brushing it while typing moves the cursor around. Annoying.
I've always used either a separate mouse, or the nub/stick on IBM laptops.
Always have referred to that IBM stick by a different name, and perhaps, that's the source of the satisfaction. Anyhow ...