> How much mains (or 2x mains) frequency flicker do these 
> particular LEDs
> produce?  Worse or better than modern cheap electronic 
> ballast (C)CFL lamps?

Particular - not knowable yet probably.
But there is every reason for LEDs to have no better and 
possibly worse flicker performance than CFLs if the LEDs are 
not DC operated.

> Come to think of it, I'm sure most people reading this are 
> looking
> right into the light from a quite steady (but not cheap) 
> CCFL lamp.

Not I - not from either high quality CRT screen :-)



        RM 

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