I'm going to purchase a new Mac mini and have decided on the i5 with 8gb (plan to upgrade to 32) and am struggling to decide between the 256 and 512. This will be my first computer w/o an upgradable hard drive. I currently have a 2012 Mini with a 750gb DIY fusion drive. Currently using ~250gb of that on the OSX volume and a 50gb Bootcamp volume. About 100gb is music and photos I can easily swap to an external drive to store, so now I'm down to 150gb. I've also just restored from Time Machine backups for my past 5+ computers leading to this one. So there's tons of junk apps and files that I no longer use either (no idea, but probably another 30-50gb of junk that'll get wiped). Bootcamp is only used to literally run a single app, so it can probably go from 50 down to 15gb as well. My dilemma is I think 256 should be enough, but I also want to get 5+ years out of this computer. I'm worried about OS size creep, or other stuff starting to take up space that can't really be avoided, which might cause the drive to get filled in a few years.