Upgrading a friend to Mavericks this weekend. Their computer is still on Leopard, but plenty capable of running Mavericks. I'm planning on doing a USB install of Snow Leopard, and then Mavericks via the App Store. Remembering now that you can jump from Leopard -> Lion as well… Do you think there will be any difference between going: Leopard -> Snow Leopard -> Mavericks vs. Leopard -> Lion -> Mavericks? Would either be easier than the other to do a USB install with?