I just finished playing through the harem ending, and I gotta say I liked it. Each girl got equal treatment in both story and sex, and I appreciate that. The ending also gave me an air of melancholy, and made me already miss that I wont see a continuation to their respective stories, so props to the writer on that.
I especially liked Karina's sex scene (big surprise for my favorite girl), with Melody teaching her how to get better in the sack as they went. I would've liked it more if I could've finally creampied her, or knocked her up, but those are just my preferences.