Would it be worth it to store the Photo's library on: 1. regular HDD 2. 3 TB Fusion Drive 3. 1 TB SSD Would I notice any improvements stepping up to the fusion or SSD from a basic HDD? My photo library is about 625 GB currently. I'd like to be able to render image previews and flow through my pictures in a breeze. Thinking about updating to a new 2017 iMac if they come out.