questionschallenge: need more ram for my macbook pro.

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Crucial.com

This is something that you will rely on...don't go with the low bidder.

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http://www.newegg.com/Product/Product.aspx?Item=N82E16820146697

I'll second that OCZ is good, and the same for either Crucial or Mushkin. Kingston is usually fairly reliable too. This set is for Mushkin 2x2GB - it's only about $100, after a $10 MIR. If you need more than that, cycle through Newegg - they've got great prices and are awesome on their customer service.