I currently have a Late 2015 iMac 27" with factory 1TB Fusion Drive option. My iCloud library has gotten big enough that I no longer can keep all my originals on this Mac. That's led me to the option ...

I'm eyeballing one of those Core i5 iMacs in the Apple Refurb store. The only problem is that the internal hard drive it too small (1TB) for my media library, and an external hard drive is an ...