[Amps] Power factor and choke vs resonant-choke input supplies

[Borislav Trifonov]

I'm interested in LC input supplies because they have excellent power 
factor, but I don't like the need for big chokes.  I was looking at the 
resonant-choke input supply described at 
http://www.qsl.net/i0jx/supply.html but it's not clear to me whether the 
power factor would still be good, or instead not much better than a 
plain C input.