[Elecraft] CW listening pitch

[Ted Edwards W3TB]

I like to use the CWT function when operating CW and then the Spot button
to zero-beat.
I have been using 700 Hz as the pitch but would like to hear a lower
frequency audio tone for my own preference.

What is the mind of the Reflector on a best tone frequency and related to
whether it has any impact on the roofing filter selections?  I have the
700Hz/5-pole, the 400 Hz/8-pole, and the 200 Hz/5-pole.

And thank you all ahead of time for your answers.

-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."