Fair to say there is warm and then there is Warm.
Bergger's CB Art is an extra heavy 300 gram white
FB warm image tone paper. Available in grades 2,
3, and 4. Just wondering how warm is it? Dan
Kind of hard to answer Dan, but its on the level of Forte/J&C Polywarmtone and Ilford Gallerie. I hate to use scans for examples but here's one of mine printed on it: (there was a url link here which no longer exists)
I doubt Bergger is dependent upon Forte.
More likely the other way around. Forte and
Agfa, the two with similar marketing strategies;
sell low on more volume than there is market.
Had the two sold higher on reputation and
product they might still be producing.