I wouldn't call any of the girls outright sluts..well, aside from Harley and Madelyn ( that story about Japanese dude was hilarious though). They have their own motivations, preferences and history, more than in most VNs.
Surprisingly, Yvette seems best option so far. ( Also HoneyTales: there is a bug..if you invite her over to movies,it brings you back to main screen after you've talked with her after).
Michelle: kind of hot'n'cold, obviously more romantic path
Andrea: similar, but kind of annoying. Calls MC her "best friend", but doesn't trust a word you say. Hope we Really get to fuck up that Yoshi idiot ( like convicted with life time sentence as pedophile, high security, all male facility
). And then she has to chase after MC.
Martina/Rebecca/Meadow/Melania: Gold diggers. Last type of women you want to hook up with.You'd go nuts after no more than a week.
Kirsten/Maud/Rain: Weird/crazy category. Could end up interesting.
Luana/Yanmei/Catherine/Roberta: just sex.
Riley/Irene/Elsa/Melissa: still undeveloped.
What I would like to see done better, is MC's dialogue. Kind of comes across as douche. I know some people like, but I'd like an option to play more as "good guy".
Also, at some point, there should be clear warning, when you should stop fooling around and commit ( if it is an option) to any of the girls.