Crucial (direct purchase from them) or OWC are also my choices. As long as you choose the right type for your year and model they guarantee their memory will work in your Mac. Memory has gone up a little in the past week. A few days ago it was $82 and right now 16GB (2 x 8GB) of Crucial for the late 2012 Mac Mini is only $86 plus shipping which isn't much more than the other discounted suppliers. I would rather pay $10-$15 more and have their Mac compatible guarantee and lifetime warranty. It saves me money in the long run for time, auto fuel, the hassle of returns and gives me peace of mind and then I am covered with a lifetime warranty from a company that has been been one of the official Apple OEM memory suppliers for years. For OWC...They are just good. They are a premier vendor of Mac products and supplies. Their speed of shipping and customer service are about the best I have ever experienced.