Hi All, So I think I've done my research and it pretty much boils down to the Seagate Momentus or Western Digital Scorpio for upgrading my MBP. Western Digital Scorpio Blue WD5000BEVT 500GB 5400 RPM 8MB Cache 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - OEM http://www.newegg.com/Product/Product.aspx?Item=N82E16822136314 Seagate Momentus 7200.4 ST9500420AS 500GB 7200 RPM 16MB Cache 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - OEM http://www.newegg.com/Product/Product.aspx?Item=N82E16822148374 I'm not sure which one to go with... Obviously one is 7200RPM and the other is 5400RPM, but my main thing is that I don't want my 13" MacBook Pro to run hotter but I also want it to be fast either keep battery life same or improve it. I know the WD will keep my battery life relatively the same and is quite fast and quiet, but I don't want to miss out on the 7200RPM because it is obviously faster. I don't want it to vibrate or be louder than the stock drive that came with my laptop. Maybe you guys can get me to go in the right direction.. I really want 500GB because I like to have everything in my laptop, and portable externals aren't really that convenient. Also, I'm thinking WD might be coming out with the 7200RPM 500GB soon, but I'm not sure I can wait.. I'm down to 46GB and I'm trying to hold off installing/downloading anything because I don't want to bog down my computer. Also, what's the difference between buying Retail and OEM. I know OEM is original equipment manufacturer, but how do the two differentiate? Let me know what you think. Sorry, I know there's a lot of threads that talk about 'em, but I'm just not sure at this point! I'd like to order them by Sunday afternoon, so I can get them early next week. Thanks for your help!