have you tried JetBrains AppCode (http://www.jetbrains.com/objc/) - much better than XCode
After working with an existing project for about half and hour I think I'm convinced enough to risk $99 on it. My main worry was that it wouldn't smoothly hand off xibs/storyboards to interface builder but that seems to work ok. Already this feels like a tool that was designed for programmers and not to fit somebody's idea of a shiny interface.