When there are two version of one great story a comparison can't be left out. I read the manga before watching both dramas. I loved both versions while they were going on and hated both their endings (even tough the manga ending wasnt very satisfying either)
What I really liked about the taiwan version was how they portrayed the relationship between the two main characters. You can really feel the love growing between them, the emotional struggles they go through to protect each other and what they have and all that in a still comical way. Yes, the japanese version is funny. No, wait. Hilarious. a lot more even than this version here but I feel that they kinda forgot about the romantic parts and chemistry and I am glad I found them in this version. The best of two worlds, or something like that... ^.^

As for the acting/cast. They were pretty all good, even the female lead, even tough I took me a while to get used to her. (But at least she looked like a boy =) ) the looks and chemistry were also pretty good (I especially thought the male lead was hot... ^.^)

The music was pretty catchy and earned me weird looks of my family while trying to sing the tunes at the dinner table. ^.^