Tamar,
I saw one of those and the size just didn't feel right in my hand so I went with the regular optical intellimouse. I had to go USB though because this machine doesn't have a PS/2 keyboar/mouse port like all my other machines.
>I've always used the pointer on the notebook, but a few months ago, I finally went ahead and got a Microsoft travel mouse. Big enough to use comfortably, small enough to travel easily. I'm enjoying it.