I recently tried out the Bergger NB VC FB in the 11x14-inch size. My paper was sourced from Freestyle in L.A. It is a high-quality fiber-base VC paper that compares with Adox MCC 110, Fomabrom 111 VC and the neutral Ilford paper. I found it to be a little less "snappy" than the Foma and Adox papers and didn't like the way it toned in selenium as well as the others either. When using very hard-contrast filtration, the selenium tone was markedly different than the tone at softer filtration settings; "bluer" rather than eggplant black. That's just personal preference, however. You may find it suits your needs just fine. Certainly, the quality is good; rich blacks, neutral tone, white base.
Hope this helps,
Doremus