Update after completing a few more titles:
Voice - 8.5/10 - A very good thriller. I watched the original Korean version a few years ago so I can't make a detailed comparison, but this one isn't any worse overall so I'm rating it the same. Excellent performance by the leads and great chemistry, I liked them even more than the original ones. Minus - here and there the characters were saying really stupid things - blame it on the writing.
Just One Second - 7.0/10 - Nice, short and simple.
Voice in the Rain - 7.5/10 - Started out very promising but fell flat along the way. A good premise (not exactly original but still interesting) with a lackluster execution. The plot was all over the place. There were some nice moments between the leads and they had good chemistry (including the hottest kisses I've ever seen in Thai dramas, where is the steamy kiss tag lol). The second leads' story became more interesting than the main leads' after a while.
Suddenly Twenty - 7.5/10 - Good but not spectacular. FL's acting was great. I liked the music very much.
Kadee Rak Kham Pop - 8.0/10 - More enjoyable and less predictable than I expected. A nice old school mystery with an atypical villain. Despite a bit slow pacing, the story around the characters was interesting and kept me invested. FL is a ball of sunshine, ML is so-so (not the actor's fault but the writer's). Not much of a romance but good enough considering the characters' circumstances. Suspension of disbelief is needed occassionally.
Currently watching Sleepless Society: Insomnia and Rang Tawan (started rewatching from the beginning).