My PBH is 91.5. I bought a 61.5 Homer based on Riv recommended sizing but it never felt great with drops. It's just too long. I also have 61 Roadini and it fits great with drops, and when I compared that with the newer 58 Homer, I found that the reach was actually very similar. The Homer just has a little less stack, which isn't a problem for me. So I downsized to the 58 (the gold color pushed me over the edge) and have been very happy with the fit. There is a little more seat post showing than I am accustomed to but it looks fine. I have 62 Romanceur as well, which fits great, but I never ride it anymore. I will get around to moving both of those bikes along at some point. I vote 58.
Bones