I'm trying to convince a friend of mine to switch from OCaml to F#, however they are programming on a Mac. What is the best F# development experience on top of OS X?

From looking at a [similar question on SO](https://stackoverflow.com/questions/1277430/best-equivalent-visualstudio-ide-for-mac-to-program-net-c), it appears that the [F# Addin for MonoDevelop](http://artwild.blogspot.com/2008/08/f-addin-for-monodevelop.html) is my best bet. Are there any better alternatives?