Hi all, A little help please. I came across this while searching for RAM for my new MacBook Pro. I want 4GB but I don't want to pay more than $200 total if possible. Could someone tell me whether this http://shop4.outpost.com/product/5223667?site=sr:SEARCH:MAIN_RSLT_PG or this http://shop3.outpost.com/product/5284707 or this http://www.newegg.com/Product/Product.aspx?Item=N82E16820227236 would work with my mac. I noticed that the OCZ is a "PC5400" whatever that means, and Apple's own memory upgrade for this computer is a "PC5300" If neither works, can someone tell if and where I can find 4GB for under $200. I've read a previous post where someone linked a RAM search website for daily deals, but my search through the forum did not find it. Thanks in advance!