I recently updated my iPhone 5s to iOS9 to see what all the fuss was about, unfortunately (even though I used version 11.4 to upgrade my phone), as soon as it restarted it refused to connect to my version of iTunes under Snow Leopard. I'm really annoyed about this, but there seems to be little I can do. Mainly for the lack of warning that my iTunes would become unuseable and the lack of ability to downgrade my phone to a version of iOS that would work with my iTunes as they immediately unsigned 8.4.1. I have 8 years of music and video that I can no longer use. Can't backup or sync and all that jazz. The option I'm told by Apple is to buy a new computer, but I don't fancy that just to sync my phone, and I'm not a laptop/iMac person. So, as Apple don't care about bricking my mac-iphone experience my only course of action is to upgrade my operating system from Snow Leopard using the tricks found in this forum. I don't really want to do this, my system is setup like a dream and I mainly use Photoshop, After Effects and Cinema 4d. My question to fellow 2,1ers and 1,1ers and people who still love SL is: which newer version of OS X is the most stable, least disagreeable, bug free OS that you would recommend to install. I'll probably try and put it on another volume and keep my SL intact at first. So which is it, Mountain Lion, Mavericks, Yosemite or EL Capitain? And also, I should take into consideration - Which is the easiest to install and maintain with the various tricks involved (boot.efi etc...) tl, dr: I need to upgrade from SL, what would you choose: Mountain Lion, Mavericks, Yosemite or EL Capitain? Thanks.