Originally Posted by vomitron

I think his point is that if you're going to ride what is essentially a road bike with a fixed rear wheel, you're probably better off converting an actual road bike.

If you're going to be going fairly fast down not-so-busy roads, a track bike would also be suitable, as it is more stable at higher speeds (and twitchier at lower, which is preferrable for some in traffic).

I would go with the KHS, personally.