Not just the frames, the matboard and glass are as important.
For sepia toned BW prints I only like dark wood frames, but can never settle on which ones I like best. I have built my own in the past from solid walnut, stained or not, but always handrubbed with Tung Oil. What I cannot find are mat boards in a color I like, esp. archival ones for which there are very few colors. I like cream colored ones, as long as they are not too light, too green, too yellow, too pinkish... Or I handcolor my own to match the sepia.
For glass I only use Museum Glass.
I am still not totally satisfied after doing this for 25 yrs...