Hi everyone: This is my first question in macrumors. I bought last week a 2017 21.5 inches iMac: it has 8 gigs of ram and the 1 tb Fusion Drive. I have already been talking with a AASP to upgrade the memory to 16 or 32 gb of ram and the hard drive. But I still haven't decided how to upgrade the hard drive. Those are the options: Removing both HD and Blade drive and place a 500gb or 1tb SATA SSD. Same as above but leaving the 32gb blade drive in place, so it will become a very fast but small SSD to store temporary files, etc. This sounds like the best option. Building a Fusion Drive out of the blade and sata SSDs. I don't know if this is going to work or if it's going to be faster than the second option. What option you think is the best one? I suppose that the third option is maybe the worst (or maybe just impossible). Upgrading to a blade SSD is out of question because it's really expensive (600 € a 250gb SSD).