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I'm a heavy touchpad user, to the point where I feel I can do more, quicker, with a touchpad than a regular mouse. It does need setting up correctly though.

Never got on with the nipple, the pointer seemed to go everywhere except where I actually wanted it to.

I have a friend that hates all of that and uses a roller ball.

I guess pointing devices are like pens. Different types to suit different people. As long as the nipple/touchpad can be disabled as appropriate, then at least here you have a choice...