Surely they weighed the same ton that all other 100 series and 500 series weighed? It was a given with the then technology. If I am honest—and I try to be, especially just before Christmas—I prefer a trackball with sl-o-ow mousetracking to a touchpad for fine control if it has a 2-in. ball as some aftermarket suppliers produced, but it defeats the purpose of a portable if you have to add AC adapter, second battery (if you have a PCMCIA module in use) and 5.5x4.5x2-in USB trackball assembly to your mobile workstation.
Like many others, then, I have learnt to use the ball rather than the tip of a finger on a trackpad, and it is capable of relatively fine control.
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