Hi all. Have a mid 2010 17" 2.8 GHz MBP i7. Memory is a 4g 1067 MHz DDR3. Says the upgrade would be PC3-8500 DDR3 1066 MHz on the website. So on the Apple website, they sell the 8g upgrade. My question is, do I have to use their brand, or is there an equivalent/better memory card(s) I could purchase? I saw online that I could get some for around $60 vs apples $400. So other than the 'its apple they can charge what they want' answer, is there a reason for their price increase? Is it better for the machine to have a native product? If not, what would you recommend? Thanks!