What a ride!
I must admit I had high expectations for this, and at the end I was a bit disappointed.
The story flows well and the acting is good, but I guess there are some parts that are a bit lacking.
I enjoyed most of the show, but didn't really get attached to TopMew's couple, even though I liked how they ended the story.

Story is obviously filled with toxic characters, but there is a lot of development.
In this sense, I think Khaotung (Ray) has done a tremendous job. If I have to make a note, I think that they skipped a little the mother's complex, in favor of Ray's choice to make everything better for Sand.
I want to be totally honest: I watched the series for Khaotung and First, and for Mark, and I couldn't stop because I wanted to see more of them.
That said, I think that some parts are just not necessary (the whole Boeing's plan and its liaisons with Sand and Top - I just got annoyed although I wanted to watch more of Mond's) and the overall story got a bit slowed down from episode 9 onwards.

I liked a lot the fact that they didn't force BostonNick, and that Nick finally chose to be by himself. It was great to see a happy ending. Nick was my favourite character overall, because he was always so pure and honest, yet caring. He was not trying to change Boston, but realized he was just faking the whole boyfriend thing and "I've changed, now I only see you" thing.
That was my favourite part.

I screamed when I saw Mix at the end, but it was unnecessary to the story xD
At first I thought they would've proposed a new version of Boston, but I'm glad they didn't.

Overall, it's an enjoyable story, "spicier" than usual for GMMTV and I guess a little bit more realistic than the average GMM series.
It's not a masterpiece, but you can watch it without thinking "oh gawd, I wasted a lot of time".