Hey James, I have also looked into a possible dahon equivalent for the Raleigh Folding i8 (as I have read somewhere that it may be a rebranded Dahon and the closest bike I can match to it is the Vitesse D7HG)

http://us.dahon.com/bikes/1650/vitesse-d3d7hg

Both the Dahon Speed P8 and Mu P8 have 8 gears but they are derailleur bikes. Thanks!