On windows, gvim. On mac (we primarily do iPhone apps), Xcode, with MacVim as the external editor with keybindings setup to build/build-run, etc. All this spa

On windows, gvim. On mac (we primarily do iPhone apps), Xcode, with MacVim as the external editor with keybindings setup to build/build-run, etc. All this spanned over 2 windows monitors, 1 mac laptop and an external mac monitor, with an iPad sometimes becoming a 3rd mac monitor.