Those of us who have a variety of Macs are likely to have trackballs (PB 100 family), trackpads (PB 500 family and later) and mouses from clunky M0100 to Optical Pro of one kind or another. I don't find any of them difficult to manipulate within a pixel or two. Although my billiard-ball size (to steal Bunsen's reference) Precision Instruments ADB trackball at sl-o-o-ow tracking speeds is capable of even finer discrimination, I don't need it often. When a soundwave can be expanded to 2,000,000%, as I can do in Spark, the old optical mouse is plenty precise enough for redrawing waveforms.

One 'mouse' characteristic that I am not enamoured of is supersensitive trackpads that 'sense' a finger that is not in contact with the pad, and interpret that as a selection. It leads to some disconcerting selections on a G3/600 iBook known to me. And I hasten to add that this is not for lack of twiddling with the trackpad's control panel.

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