I am looking to upgrade my RAM on a new iMac 27-inch. I purchased it with the least amount of RAM available (4GB 1066MHz DDR3 SDRAM - 2x2GB) because apple wanted too much for their RAM. Can anyone suggest a good place to purchase apple compatible RAM? I am hoping to get to 8 GB 1066MHz DDR3 SDRAM - 2x4GB or possibly 16GB 1066MHz DDR3 SDRAM - 4x4GB if the price is not too outrageous. Any advice on a good product would be helpful. Also looking to possibly upgrade my MacPro (but it is working just fine and don't really need to upgrade its 4 GB of RAM).