I only use the Ultraflex. All SS construction and will bend into about a 3" diameter circle. They are teflon lined so they move super smooth. They cost a little more than the standard Morse cables, but they are well worth it.
Eddie
Since I bought the first set of TFXtreme cables I have not put anything else on for controls, they are the bomb and work smooth and tight (no slop) over long distances. They are not really needed for indicator cables but they work phenomenally well for controls.
www.boatfix.com always has good prices on them, but I have not used them in a year or two and have heard rumors of bad service lately so keep that in mind. Normally they had them to me in 2 days though.
Uflex and UltraFlex seem to be better then the teleflex, atleast there generic brand. Teleflex makes different 33c cables of various quality. another brand I've used was