My main computer is a Mac Pro tower, hooked up to a 30″ Apple monitor. From the outside, the machine looks exactly like one you could buy in the Apple Store today, but its actually six years old. It feels fast enough, largely because I swapped in an SSD and upgraded my video card. I use it for most of my writing, plus the podcast and video work, and I havent felt any pressure to get a new machine. But now that time has come: This rig isn't able to run Mountain Lion. Six years is a long time for any computer. Id happily replace it with a new one, except the ones theyre currently selling are so shamefully behind the curve. Should I just keep running Lion? In this way Id give up some of the new features, but most apps should continue to work. One challenge is that a lot of the new software were developing is aimed at Mountain Lion, so Id have to do that work on my little MacBook Air. But I have to admit its puny graphics card wouldnt be able to handle my big screen, and Im not willing to give that up. Also, Im running four hard drives in my tower, so Id have to figure out an external solution for these. Now what should I do? Any suggestions? Thanks in advance.