@JaMau I got the HORI TAC PRO and was unfortunately a bit disappointed. I play Battlefield 1 on the PS4. The hand rest is unfortunately unsuccessful. I imagine comfort differently! My hand could not get used to the keyboard. The settings are very varied and with a little patience you also get a good feel for the mouse. But if you really want to play with mouse and keyboard, there's nothing better than the computer. I returned the TAC PRO. It cost me 20 Euros to try it out, but in my opinion it was worth it!

@all
I can't rate RainbowS directly, but if you come from a PC like I do and don't get along with the controller in 3D action, you can certainly make better friends with this controller. There's only one way to shoot properly, and that's on the PC, but I really like playing adventure games, and since they often require aiming and shooting, the Tac pro isn't a bad alternative. But if you're used to using the normal PS controller, I'd advise against it.
I got Metro Redux and compared to the PC controller and the PS controller, the Tac Pro is mediocre. For me it's better than the controller but never the PC feeling.
Finally, sorry but the price is way too high, half as expensive as the console itself, for that you should expect a top of the range product. For 50-70CHF it would be adequate.

I hope I have brought some light into the darkness.

Greetings

@YaMau
I got this product for Christmas (by request) and was not disappointed. I play Rainbow Six Siege with it and it works better than with the controller.
It takes a bit of getting used to but with a bit of practice it's perfect.