[TowerTalk] CNT 400 flexible coaxial?

[Jorge Diez - CX6VM]

Hello,
 
I am looking for a flexible coaxial better than 9913 to feed yagis antennas.

 
I know about CNT 400, but is rigid, so I´m afraid it will brake up in the
balun antena because of the antenna rotation. Or maybe not, someone use
CNT400 for that directly from yagi´s balun to the radio?
 
Any another coaxial model (that´s fit direct in a PL259) better than CNT400
or 9913??, if flexible will be better.
 
Thanks,
Jorge
CX6VM/CW5W