Have you tried an 1886 gamma curve to compensate for the low end?
Whenever I have tried BT1886 the near black seems to get too washed out for me.
I assume this is because my i1d3 is not good enough to read the true black of my JVC and throws off the proper curve.
I am not entirely sure I have seen an actually correct BT1886 curve yet heh.
What Dominic suggests is a nice compromise. Gamma 2.4, with about +2 on the Dark gamma control.
I understand plenty of people like 2.4 gamma, but it seems like I like it a little different. I guess I light brighter midtones as well as shadows.
I also believe that the gamma level that looks best sort of depends on your peak nits. The lower your nits, the lower gamma seems to work better. Maybe if I was at 100-120 nits I would like 2.4 gamma across the board more. I am at about 75 nits with my JVC bulb on high and iris wide open at the moment.