What I admit Not knowing is the curie and power handling truth of the core in hand.
Stringent controls of the core makeup is a concern, Especially for a high power transmitting choke.
Assurances that the reputable dealer is able to guarantee the core to a stringent and important parameter such as the case.
Is it a myth that reputable companies have quality control challenges?
Is it a myth that the longevity of such core and it's indigenous ui automatically assures the prevention of failure over time in lieu of high power application?
Poor core quality can cause expensive and annoying repairs.
Expensive/or inexpensive is in the eye of the beholder.
Air wound transmitting chokes do not attenuate common mode displacement current to as high a degree.
It does make sense to rationalize, predicated upon faith of quality; to go ahead and use the toroid cores and wrap coax techniques when the desired result is accomplished but a core is a wear item relative to RF.
Yes we can build a dam high enough.
Appreciate your web site and the hard work