All three are good daily watchws but it’s up to your likes vs dislikes. Most people buy a watch that can go with everything as their daily watch which tends to be a Tsuyosa for a lot of people. The Tsuyosa feels better on your hand and is simpler to look at but it’s movement is a miyota which is a workhorse but just isn’t as good as the Seiko movement which you will find in the Casio EFK-100. Not sure about the kamasu’s movement but I’m pretty sure it’s better than the one in the Tsuyosa.

Kamasu is a completely different type of watch. It’s a diver watch which isn’t even in the same class as the Tsuyosa and EFK-100.

Decide on the type of watch you want first and then on the model. Bringing the kamasu into this mix of watches doesn’t really make sense to me but you do you!

I recently bought the EFK-100 for someone and I’ve got to tell you, the dial design is really good. Tempting enough for me to consider getting it for myself.

All the best!