I have watched both versions and I think Go Ahead is much better. More stress and angst from the moms but overall much better. San Ha mom is as selfish as ever.
In this version San Ha and Ju Won had lukewarm chemistry at best.
Hae Jun and Dal works best as friends. No romantic chemistry. She is very nice, cute and timid. Unsure how she would make a good Attorney but that is another topic. The vibe I got from the plot and the way Hae Jun looked at Dal it seems more like pity and feeling sorry for her since he is such a nice guy . In the long run it does not make sense for him to fall/crush on her. He never had any feelings like that for over 10. Not even a hint. I can understand Dal crush all these years though because Hae Jun is nice and attractive.
Oh well.