I liked every chapter but the fourth, though to its credit, it did set up the expectation for NTR since the very first chapter. And I would imagine that many didn't have a problem with it because the NTR involved her other son. Still, I agree that both the art and story were quite stellar. (I figure I better answer this way since your avatar is from Chapter 2.)
Nice list. I imagine I may have felt different depending on which work first caught my attention. For me, it was Immoral Desires. I was actually going to stay away from 3D works, especially 3D incest, considering the advancement in 3D art has provided a catalyst to my often escapist and fantasy-prone tendencies. And CrazyDad3D kind of ruined the concept for me at the time. I was aware of Madness Together first, but chose not to read it. I honestly read the first chapter of Immoral Desires on whim, and thought Lana's design was impeccable even with that large brown sweater. Something about her modesty was just appealing to me. Then, I relented and read Chapter Four of Madness Together, and appreciated the slow-burn of the Uncle/Niece incest. Also, Sarah is 3D art's epitome of "blonde beauty." I still haven't read Satisfying Needs fully, only skimming pages, so perhaps my lack of attention on the series has under-served my ranking of Amanda. Though I'm sure many here were introduced to Daval's work through Satisfying Needs, so I understand one's holding Amanda in high esteem. Where I think Amanda's appeal could have been improved was in playing to her strengths. When you have her dress in lewd clothing, it's hard not to compare her to Alexa, who frankly pulls it off better. Don't get me wrong, Amanda without clothes can stand her ground with Lana, Sarah, and Alexa, but because wardrobes are reused throughout Daval's works, and Daval tends to make the female characters dress and make themselves up more lewdly as their respective stories progress, I don't think she pulls off those look as well as the aforementioned three. That's not to say that Amanda's design isn't incredibly sexy when she tries.
I'm familiar with Mandologica's work. I like Katherine from Forbidden Flames. She's wonderfully "thick," and the short temper adds to her appeal. I used to like Adrianna from Breaking Boundaries, but the attempt to "make her sexier" has actually made her less sexy. Her original design was good enough. But the schoolgirl outfits and the Nurse uniforms just take away from her original appeal. I do like the change from blonde to auburn, though. As for Caroline from Teamwork, one could probably argue that she's the most attractive out of the four, though I still like Katherine better, I personally just don't like the "slutty mom" look, behavior and vibe. As for the mother in Just For You, even though I know how she looks, I've never read the story in which she's featured.