I am starting to see the need for 2GB of RAM on my macbook. I am looking at these Mushkin chips at newegg.com: http://www.newegg.com/Product/Product.aspx?Item=N82E16820146126 They are pretty cheap, at only $49 a piece. What do you think? Are they worthy? Or should I invest in something with a higher price/quality? Thanks for your advice.