I think I am about to get my first Mac (a 2.2GHz black Macbook) and I'm definitely going to want to upgrade to 4GB of RAM. Here are a few sites I found. I need to know: does the brand matter?? Should I just get the cheapest one or is the more expensive brand better? NewEgg http://www.newegg.com/Product/Product.aspx?Item=N82E16820208323 Fry's http://shop2.outpost.com/product/5175606?site=sr:SEARCH:MAIN _RSLT_PG OWC http://eshop.macsales.com/item/Other World Computing/53IM2DDR4GBK/ Crucial http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=C599448AA5CA7304 I need an honest opinion. Thanks a lot.