(I am a beginner level drummer)
I bought a Roland TD-17 and so the the KD-10 kick-tower was included which was way too loud to play in my apartment. Since the KT-9 is still quite noisy, I decided to buy the KT-9.
First things first: Yes, the KT-9 does not feel like a proper kick pedal. BUT now the kick is the most silent part of my drum set and I can play more than before without disturbing my neighbours too much.
All in all, I am still very happy how it feels like to play the KT-9. Sure, it has not a real beater, but it still feels high in quality to play with this "kick" pedal in contrast to other silent (cheaper) kick triggers I have played on.
But for everyone who is interested in a silent, solid, and high quality Kick Trigger Pedal, this seems really reasonable.
Also, since the pedal seems so durable, I can imagine to have this pedal in the future as part of a minimalistic setup when I am e.g. visiting friends and want to play music with them together. The KT-9 is very easy to setup, and as said, seems to have a long lasting building quality.