[Amps] torroid filament choke?

[Tony King]

Do any of you have opinions about using a torroid in a filament choke for a 
GS-35B G-G amp covering 160-10 meters? I am thinking that it would be much 
more practical than any rod type choke since the single tube filament 
current requirements are only 3 amps.

Core size and types, core sources, inductance and stray resonances are 
things that come to my  mind. I'm sure there are others.  All of your 
opinions and suggestions are invited and welcome.

73, Tony W4ZT