While I know a lot of folks are trying High Sierra, I'm wondering if anyone remembers back to the mists of time, dodging dinosaurs, and using Yosemite - I've resisted the upgrade on my 4,1-5,1 dual, but I'm thinking of going to it as Safari cloud tabs stopped working a while back after an iOS update. So far - I've booted into a Sierra partition, it's showing my wifi / bluetooth upgrade as supporting handoff, etc. Photoshop & InDesign CS5 seem to work OK for my legacy workflows. Are there any reasons to not move to Sierra? Also, any folks do much VMing of MacOS on your cMPs, and have recommendations for solutions - parallels, vmware, virtualbox etc?