I have played every ending.
I like Becca as she was modeled from a combo of DMD characters I like, her only flaw to me was her giga-bewbs (not my thing).
Amy felt like a good connection for those who aren't into younger girls "happily ever after"
Izzy was fun as she was sexy and willing earlier than anyone else, she had the throwback to old life before Bethany and everything, but there are long gaps without her and I feel it hurt her story overall.
Sofi and also the Sofi/Xi combo would have been my preferred end game but alas they were only ever side girls. I had a lot of fun with them through all but one playthrough however. Sofi had the top sexy body IMO and I wish she had red hair and was a LI then she would have made me love this game so, so much more.
Melody ending with her pregnant wasn't as unsatisfying to me as it was for others. She got to still do music (like in all the endings where you pick other girls) and make that her career but she also got to love us(MC) and a baby so it shouldn't be seen as a lesser endings just a different priority happiest ending.
Superstar Mel was good. I played that once straight where I rejected ALL others to preserve perfection. Then I played it with tweaks so I could have the 4some and also get her Superstar (extra bonus scene in epilogue if you do this). It was nice to see Mel get her best Rock Star life.
I liked the innovation of allowing you (MC) to be friends with the Focus girl. Having proper endings with the alternate LIs. It was a great concept. But as Mel was focus, no matter what, her career depended on you so she could only become musician for a living (still what she wanted to pay the bills with what she loves) unless you went full focus on her and her career.
They(Dots team) are in their current game allowing some alternate choices for where you end up but this one is different so no one person will suffer for choosing others. I get why it was that way here but also it was sad.
If they remade Mel with the Ruby model (DMD char that is basically Mel with smaller bewbs) I would probably play it like
Mark Takagi and repeat bliss with Mel 100 times