I never found the 55-110 that good a lens, at least with a P45+. My 105-210 was very sharp, but prone to problems with mirror vibrations or vibrations period in certain shutter speed ranges, around 1/8th to 1/45th or so on a tripod. Vertical was always worse.
I sold my 105-210 and purchased a used 210mm and still have it, excellent lens. Hood design sucks as mine no longer has a hood lock and won't stay in place.
All of these lenses to my eyes offer less contrast than the new D glass, either Mamiya or Phase One branded.
If you can fit it into the budget, the 75-150 is as good as it gets. I sold the 105-210 and purchased the 75-150, non LS. It's a beast but very sharp throughout the zoom range.
One note some of these lenses need firmware updates to work with the DF or DF+ correctly. The 75-150 will and I believe the 105-210 will also.
Good news is the 105-210 and 55-110 are both on the used market for a good price.
Paul