Lisa, I have a couple of questions about the Rambouillet for you.
On the Rivendell web site at
http://www.rivbike.com/bikes/rambouillet it says "The Rambouillet’s stock gearing is 48×36×26 in front, and 11×32 in back."
On the Harris Cyclery web site at
http://www.sheldonbrown.com/harris/rambouillet.html it says "The Rambouillet comes stock with a 12x27 9-speed cassette..."
I assume the Rivendell folks are right, since they should know what they build. Can you confirm? (My 50 year old overweight legs really need more low gears than I've got, so if I'm going to dream about a new bike I might as well make it one that will take me up hills more easily.)