LDLC does not have the 200
I chose this case because I wanted an aesthetically pleasing tower.
The ITX list at LDLC offers a very limited choice.
The Thermaltake 100 offered a good compromise, so I took the plunge. A few days after installing my PC, I realised that the Thermaltake 200 was available at the same price. This one offers better air optimisation for those who want to put in a big configuration.
As for the 100, it's very easy to assemble and has dust filters everywhere. It's very pretty and looks better than it does in the photos. Mind you, the tower isn't small, it's not far from a Micro ATX format.
The big problem is the air flow, which is so small that the GPU is really stuck to the only air extraction on top. Everything passes through the AIO, which is necessarily a simple 120mm, or else you'll have to use a ventirad or home-made unit. The tower can take very large ventirads, which is a good thing. This is perhaps the best choice for those who are stressed by temperatures.
For me, with an I5 13600KF, with a 120mm AIO that has 2 fans glued to it and a 140 fan placed at the bottom of the case (above the thermaltage logo). Temperatures are: surfing at around 40°C and 4K video at 60°C. I have peaks of 80°C on Cyberpunk 2077 in high + RT.
I think that the 200 version with a 240mm side-mounted AIO, in addition to the upward extraction, gives much better cooling performance for those who are aiming for more muscular configurations.
I'm still won over by the case, which is very handsome. It's just a shame that for its size, you don't get better air extraction.