Hi, I am running some automator scripts on Parallels desktop VM (Mavericks) - I can run two or three with my mac pro 3,1 and there is a slight drop in performance, autoamtor get lost, their workflow crashes a lot. I want to avoid that. I am getting new imac pro, and refurbishing my macpro3,1 with some ram and gpu. After that I want to reinstall my VM osx's that I run automators in. Automator runs some actions that make safari do some work online (put a text in a box, click buttons, repeat, etc). My question is: what will be the best osx version to install on VM to run that kind of automators stable, without drops of performance and still run on XXI-century websites?