Well, I'm a big fan of NTR endings in his games, and out of those, the #1 for me is Make Me Happy, with Pineapple Express sharing second place with Sharing My Fiancee.
One major aspect of endings in NTR paths I expect and enjoy are witnessing the consequences of cheating/NTR (though, preferably positive for the cheating FMC), and dimajio's endings don't tend to do that very often or in a satisfying manner, ironically enough.
Make Me Happy is the only one that shows the player (MC) what happens to the FMC some time after she leaves him for her lover, and that's great - really hammers home the fact that the FMC is now happier with that guy than she was with MC. Call me weird, but if you keep making choices that "let" your wife cheat, you deserve to lose (and not get any revenge) for your incompetence. Sorta like the saying "play stupid games, win stupid prizes".
Sharing My Fiancee also has that type of an ending, though for some reason, we never get a proper epilogue of what happens to her when she leaves us.
Pineapple Express shows us a pregnant Julia, but then skips the pregnancy part and shows her enjoying regular gangbangs... which ruined that particular ending for me, if I'm being honest.
I realize as I'm writing this, but none of dimajio's endings get a grade higher than 7/10 from me, so I guess I am saying he hasn't really made the perfect (NTR) epilogue for a game yet, IMHO.