I'm going with these...
ambaker, very nice collection!
I have praised the Fujica 690 100/3.5AE + Auto Up accessory for its ability to capture close up head portraits.
I must add the Norita and Rittreck 66 80/2 because of their low light and bokeh head shot portrait abilities.
Both these camera/lens combination can do things which are very uncommon and unique for medium format cameras.