Ultegra limits me to 30x27. Only 4 hills have beaten me on this: The Devil's Staircase on The Elenith (2008), Hardknott Pass and Wrynose Pass on the Fred Whitton Challenge (2008, 2009), and Buttertubs on the Tan Hill Challenge in 2006.
2006 was my first season, so I discount that. Nothing will compare to Hardknott or Wrynose, so I can discount those too. The only relevant one is the Devil's Staircase, and I'm stronger than in 2008 - so I might be able to get up that now.
Might be a good idea to do the Elenith again this year. I hope for less snow than in 2008.