Well, I really like Nyotengu. She has a very beautiful face and I love her voice and personality. It's sensual but not overtly crude. I also think her being really tall fits in very well. She just seems like a well rounded package and someone who delivers something very unique to the DOA cast.
Honoka is kind of a cheap pedestrian pick but I guess I'm not that sophisticated of a guy. She's young, she's got a baby face, and exaggerated sexual characteristics with the largest breasts and widest hips, but I find myself enjoying all of those things like fast food. Her cartoonishly sexualized body works on me at a primal level, and they didn't go too overboard to make her look like a retarded Skyrim HGCGBBQLBT whatever abomination.
I like Marie a lot because she offers a unique body type that otherwise wouldn't be represented, and her baby face suits her body type even though it's cheapened by it being copy pasted onto Honoka. They probably could have avoided some of the controversy from the blatant copypaste by saying Honoka is her sister but well, that ship has sailed, and there are already existing copypaste faces like Ayane/Kasumi.
Momiji I feel is one of the most well rounded women in the game. She doesn't have ridiculous proportions, but a very nice shape, and a detailed face that looks distinct and realistic to me, but also beautiful. A funfact is that her face texture is the most detailed in the game (higher texture resolution). She has lots of details that show me the person who designed her really care about what they're doing, like the larger ridge on her top center lip (hard to describe), and the very slight freckles, and more pronounced facial complexion that makes her face look less plastic than some of the other girls. Her voice is also very soft and womanly. She just seems like the kind of woman who would be a dream wife.
I would go on but I'm at the character limit.