I have been looking at used Niner MCR and SIR frames; but haven't found any great deals (on an XL size) to get the project under my price range. I still have the Airborne Goblin (or the Guardian) in the back of my mind as a budget choice.
I think that a geared Reynolds 853 steel frame with a Niner (or Whiskey) rigid carbon fork would do well for the endurance events I am looking at especially Iron Cross in September:
Iron Cross
Make any decisions? What races or types of long rides you plan on doing?