Bergger BPF has taken a beating on this forum, but I have had good luck with it in both 8x10, and recently, 11x14.
I want to report a successful test of N-1 development using HC110 and sodium metaborate. Rereading Ansel Adams' The Negative, I was researching water bath development. He comments that, among others, HC110 can be a "compensating developer" in that shadow values can be strengthened using "stand" development in either an alkaline bath or a second developer. I chose the former and made a 5% sodium metaborate solution, developed an 11x14 negative in HC110 1:9 for 3 min. of the usual 6 min. development time, then laid the wet negative into the alkaline bath for the remaining 3 minutes, without agitation.
Results: Very nice N-1 negative with very open shadows and some indicated Z IX which contracted to Z VII+.
This will be my standard N-1 hereafter, and I will experiment with N-2, which I hear is nearly impossible with BPF.
DE