I watched the korean adaption in 2010. As a kid I fell in love with it and all of its weird cliches. People always talked about how the Japanese version was superior and as someone who has recently fallen into this hole of watching japanese dramas, I had to check out Hana Yori Dango.

Strong Parts:
This is a VASTLY superior version than the Korean Boys Over Flowers. Why? The acting and the chemistry between the two leads were off the charts. It was wild, they were electric whenever they were on screen. The ML's acting was pretty damn impressive, making you actually grow to love such a jerk of a character. The FL is awesome. What complaints could I give? She's not whiny or annoying. I found her to be pretty honest and extremely lovable. The acting was natural and not over dramatic.

This version has only 9 episodes while the original has like 20+ so it doesn't have that much filler in comparison. The Their hair was also better lol.

The family is also hilarious and has clever writing whenever they were involved. I loved them.

Negatives:
This plot is kind of ass, I mean it's a drama from 2005 so I'm not expecting a masterpiece nor is the original manga a masterful plot so what am I expecting. However, if I'm putting time to watch a drama, I have to keep the story in mind. It's a plot full of tropes left and right. And as someone who watched the BOF version, I remember everything so I just ended up bored. But I did laugh whenever there was something absolutely ridiculous happening.

Overall:
Better than BOF but was it worth it? No.