I like the old style derailleur cable housings that are wrapped with round wire and have no plastic coating. I know that they had to go away from round wire to get the accuracy necessary for indexed shifting (or so I've read), but somewhere in the world, there has to be a place where you can still get cable housing like this.

I just haven't found it and in the mean time, I just end up using lengths that come with NOS shifter/derailleur parts. Anybody know a place to get this?