Like a pretty hefty percentage of users here, I have a fond attachment to the simple use and appearance of the basically obsolete 1-spd bike. There's no denying, however, that if you want to get somewhere in a hurry, or have rough or hilly terrain, geared bikes do the job a lot better. Derailleur systems have improved over the years, but the basics have remained pretty much the same. I have some basic use and operation knowledge of older internal gear hubs, but going by the trouble shooting postings and responses, it's clear that it's by and large useless when it comes to the newer generation multis. What I know about them basically consists of riding my friend's Kettler down the street a couple of times. I'd like to see a single thread on the subject, besides the scattershot help on individual situations. Which ones are better, what can go wrong, are they over/underdrive, and so on, maybe in the help section to be stickied if it gets useful enough. :|