Hello everyone, I just got my first Apple product, a 13.3" MacBook Pro, and have been loving every minute of it. I'm using it mainly for work (systems development and graphics design). 1) Salesperson from Apple shop strongly advised against keyboard protectors citing it causes overheating; he recommended regular vacuuming and blowing with compressed air instead. Is this true? 2) Will I see a noticeable performance increase with a 7200rpm HDD? Will a larger capacity and faster spinning speed of 7200rpm degrade battery life? How about heat issues? 3) I'm thinking of getting a matte screen protector to reduce glare and reflection. Will the matte screen degrade image quality and brightness. I seen several sellers (from HongKong) selling cheap ones at US$6 to US$9 with shipping on eBay, are they safe to use? Here is one such example, http://cgi.ebay.com.sg/Anti-Glare-S...0?hash=item19b6bd2faf&_trksid=p3286.m63.l1177 Thank you.