First post. Im currently using a early 2008 24" iMac. I've modified it to 2TB WD black HD and 6GB ram. My main use is for photography, storage and editing. I have a 80GB managed aperture library that I need to move to somewhere outside of aperture. I finally quit using aperture at the end of 2017 and used photo's this year. Not happy with Photo's. I looking at a 27" iMac with the i7, 8GB RAM (upgrade to 40), the AMD 580 and either a 1 or 2TB SSD. The difference is $650 for the increased SSD. Is money better spent with the smaller SSD and externals? Or the 2TB and easier migration? My current HD has 1250GB on it so migrating to a smaller SSD presents a challenge to me. I have not ever partitioned drives or used externals as my daily storage. Any suggestions appreciated.