I just upgraded my Mac to El Capitan (10.11). Ok, I'm a bit behind... I know that 10.12 is the most recent version, but some of the software I use hasn't been updated to support it yet. I've gotten over my need to be on the bleeding edge all the time.
I upgraded direct from Mountain Lion (10.8), so I skipped 10.9 and 10.10. The upgrade was mostly successful. For some reason I had to re-enter my wifi password. It also lost my Finder favorites. Minor issues. The most important issue was that it import all my mail, which it did.
The biggest thing I noticed is how ugly the GUI is now. Everything is grey and white. No more color in the toolbar icons of the Apple apps. There is very little color variation between the foreground window and background windows. Everything looks flat, no more 3D shading on buttons, icons, etc. The translucent menus are also annoying. Johnny Ives needs to go back and read Apple's human interface guidelines.
The other thing I noticed is El Capitan is significantly slower than Mountain Lion. I found that if you go to System Preferences -> Accessibility and check 'Reduce transparency', that turns off all the translucent effects. It seems to have greatly improved the performance, now that it doesn't have to waste cpu cycles on pointless eye candy. I'm also experimenting with 'Increase contrast'. I'm not sure yet if it improves anything.
I would still be running Snow Leopard (10.6) if it was still supported by my more important apps. IMHO Apple's best OS. So it goes...
I upgraded direct from Mountain Lion (10.8), so I skipped 10.9 and 10.10. The upgrade was mostly successful. For some reason I had to re-enter my wifi password. It also lost my Finder favorites. Minor issues. The most important issue was that it import all my mail, which it did.
The biggest thing I noticed is how ugly the GUI is now. Everything is grey and white. No more color in the toolbar icons of the Apple apps. There is very little color variation between the foreground window and background windows. Everything looks flat, no more 3D shading on buttons, icons, etc. The translucent menus are also annoying. Johnny Ives needs to go back and read Apple's human interface guidelines.
The other thing I noticed is El Capitan is significantly slower than Mountain Lion. I found that if you go to System Preferences -> Accessibility and check 'Reduce transparency', that turns off all the translucent effects. It seems to have greatly improved the performance, now that it doesn't have to waste cpu cycles on pointless eye candy. I'm also experimenting with 'Increase contrast'. I'm not sure yet if it improves anything.
I would still be running Snow Leopard (10.6) if it was still supported by my more important apps. IMHO Apple's best OS. So it goes...