Ok need some help please was going to upgrade my Ram it has the stock original 8GB of Apple Ram. Was about to get 16GB (2X8 GB) of RAM from Crucial to fill the other two available slots so the machine has 24GB. I have seen Ram on sale on Amazon which is about half the price of Crucial. Would it be worth buying or should I pay more than double the price for Crucial. Crucial coming out at £98.00 and the cheaper one is £39.00