I would skip both.
OWC has a great price on their and are very helpful. I've gotten most of my RAM from them and only had an issue once with the stick and they replaced it without question.
OWC's 1GB stick for the MB, MBP, Mac Mini, etc...
Or
here to get the matched pair (though you only asked for one stick.)
Louis L'Amour, “To make democracy work, we must be a nation of participants, not simply observers.
One who does not vote has no right to complain.”
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