I had problems with housing when I had to turn my bars until they touched the frame in order to fit the bike in the car:


I found that the segmented housing by Nokon works well. Another "feature" of Nokon - you can "grow" housing, i.e. add links. I fine tune my housing lengths before I cut cables and wrap bars. I've also put the same housing on a bike that is 3 cm longer in the top tube without any problems (and one has an internal full housing top tube so I had to "grow" the housing about 45 cm in length). Since I got the Nokons I traded in the blue car. I still use the Nokons because they allow me to run tight bends without any problems, they never blow out, and they don't compress. I also run the liner for the full length of the cable now and have never had grit/grime/water/etc related shifting problems.

The regular features of Nokons is that they're about 1/3 the weight (aluminum segments, not steel), they don't blow out (because they're not made of strands of wire), and the come in some colors. They also cost a bit more than regular housing and they require use of the thinner gear cables.