THE GOOD AND THE AVERAGE:
The plot: Heres the tricky part, for those watching without having seen other versions, they watch with fresh eyes and many have pointed plotholes, and/or discomfort with some scenes. Personally, I felt this adaptation tried to follow the manga closely but also changed the mood of it. This version is actually lighter, perhaps more palatable and digestable with reduced bullying. Even villanous characters were dialed down, case in point the person who spread the picture of San Chai..that among others were toned down. That said, its a pro and con at the same time because it isnt as intense.
The characters- F4 in this version is more approachable. They are your rich good looking guys but also worked hard for their academics and/or have their talents.
Male otp: Dao Ming Tse is the tough looking kid- that really resembled a porcupine with a soft belly. He's also with steadfast once (and it didnt take long) when he realised his feelings. On most parts he has a very direct approach in pursuing the girl who caught his attention and never much bat an eye at other girls. His character grew from likable to lovable as the drama progresses. His greatest attribute is how he supports Sanchai and encourages her. And you also see his growth towards the end, how even unspoken he reads, understand and provides understanding and security when Sanchai needs it.
Female otp: Dong San Chai is that petite firecracker. She seems that average girl but when push comes to shove and she stands up for her friends, she shines.. and caught the attention of our male lead. In many circumstances, shes slow in romance department and tends to be passive. She took her time in processing the changes in her feelings from hatred to friendly to something more when in comes to Ah Si.
Rest of F4: Like mention this bunch of F4 are more likable. Hua Ze Lei is the flower boy in terms of look, gaze and speech. Who became the realible rock and soulmate to SanChai. Mei Zuo and Xi men also get their arc in the drama. Personally i did not enjoy Mei Zuo's arc and the story of his love interest. Xi men and Xiao Yuo was likable and i did look forward to their part.
Others: SanChai's parents are nice loving parents. They are also less theatrical then J version. I also like Dao ming tse's housekeeper too.

Acting- This is the mix bag.
Dylan Wang He Di- a complete rookie with his first work was a surprise. I thk perhaps his own real life behaviour transcends into his character. He brings the playful and energy to Dao Ming Tse. There's obviously room for improvement but he sells the character well and you could overlook it.
Shen Yue- having seen her previous work in A love so beautiful, i did come in with expectations and she was adequate. She excelled in poignant scenes but her performance was also patchy. Playful and sweet scenes was dealt well between her and Dylan. 90% of their kiss scenes were stiff and at times awkward (perhaps they were shy or it was too cold during filming?) Darren was a bit stiff and sometimes too expressionless. I cant help remembering Hanazawa Rui and found him lacking. Connor was the worst of the bunch in my opinion, he was cringey and he made me skipped his parts. Caeser Wu fared slightly better but also patchy performance.

OST:
Ost can really lift up the drama. Some of the ost esp the old ones were really good and nostalgic. But some of the ones resang by F4, unfortunately i didnt enjoy their vocals. I thk J-version who had Utada Hikaru and the original TW version were a level better.

THE VERDICT:
The plot like mention above is diluted. As a breezy summer watch and as a sometimes fluffy and sometimes innocent youthful love story (if you dont take it too seriously) it was thoroughly enjoyable. They did give us fanservice scenes, happy moments between otp, their coutship, dating, breaking up and getting back together. There was friendship and there was family and there was a love that survived obstacles. It did drag a bit in parts but wanting to see DaoMingTse and DongSanChai get together was still a worth-watching journey. This version replaced the intensity with youthfulness and thats a tradeoff that can tip the scale depending on personal taste..

For all these reasons its still a solid 8.5 for me. Cause this version of Ah Si and SanChai was still cute and lovable as a pair.

Note: My review is influenced by my memory of the other adaptations, how i feel about the story, the characters, the acting, whether it was memorable and my feelings right after i finish the last episode.