TLDR: Buy this game if you love rhythm games, But wait for a sale.
This game is the best version of Taiko that I have ever played, and I've played most of the games in the series. It runs much better compared to the Nintendo switch version, has really good side modes and is very fun. I was debating on whether to actually buy this for a long time and picked it up during the recent Bandai sale.
While the game is a lot of fun, I do have a few complaints:
1) It is very greedy. With just the base game, without any DLC or Taiko music pass, you get a fine selection of songs but it's very limited. The DLC prices, while fair, feel greedy on top of the Taiko music pass being a thing. I'd say that the Taiko music pass is much better financially, but it still feels quite scummy for this game to ask for more money after the high entry price.
2) Why is there no online multiplayer for Don-chan band and Ninja Dojo? I personally find Don-chan band to be the most fun of the three side modes, and while local multiplayer is an option, it feels weird to play with AI when the whole point is creating music together.
3) Why can't I play all songs in online multiplayer with people? Even with DLC and Taiko Music pass the list of avalible songs is reduced by around 40 Percent whenever I want to play online. This feels especially scummy. LET ME PLAY HAPPY SYNTHESIZER WITH MY FRIENDS
4) Why is the Oshi no Ko DLC that was released for the switch last December unavalible here? While the game can't include the motion control side mode due to being on PC, I would have liked to have the DLC at a slightly reduced price. This seems contrary to my earlier complaint about the game being scummy, and it is, I'm just obsessed with Oshi no Ko and sad that I can't have best girl Kana with me on PC.
It sounds like I'm just complaining, so let me include a few things I adore about this game:
1) The game runs insanely smooth. Like, Persona 5 Royal levels of smooth. Games running well is essential for rhythm games, and this one NAILS IT
2) The classical section is so unhinged and out of nowhere that it has become my favorite. The remixes, especially. O Sole Mio is so good.
3) There are so many cool customization options! You can really make the game your own, with colors and clothes and even different instruments.
Overall, This is a great game, but it needs some changes before it can be truly good.