@jmreekes A year ago our Men's Shed group bought a 21.5-inch iMac. As the needs for it are not intensive, a 1 TB HDD & 8 GB of RAM were considered to be plenty. But if I were buying for myself, I'd get a Fusion drive & 16 GB of RAM at a minimum. I find the 27-inch to be too big.
// @gtwilson