I love GP3 in 4x5. It used to be rated ISO100, but fans of the film found it best to rate it EI50, and I read somewhere that the manufacturer has recently started rating it as such. Extremely fine grained at EI50, beautiful tones, bit of a retro look that I like a lot with my Aero-Ektar/Speed Graphic and human subjects combo. Bob Crowley over at New55Project explained that it is one of the emulsions still left today that closely resembles T55. Works great in Rodinal 1:100 stand dev.
Namiki by Dr. RawheaD, on Flickr