The benefits over a spinning disk are in no way insignificant. You might not see them, but they exist. I am at 80% utilization of a 512GB SSD in my rMBP, so any

The benefits over a spinning disk are in no way insignificant. You might not see them, but they exist. I am at 80% utilization of a 512GB SSD in my rMBP, so any new capacity is welcome.