I want to see how much this costs.
I didn't like the S340s large side panel window, as I feel it forces me to fill it with a rad to satisfy what I would want my build to look like. Air coolers look so weird in it since you have this empty void in the front. Also, you have to buy intake fans to ensure airflow and longevity. All these things increase cost of ownership.
It comes with 3 140mm fans, but if it costs more than, say, a Fractal Arc Midi that also comes with 3, this has less drive bays and Fractal's cases have satisfactory airflow even with the drives in place.
If the build quality is as good at .8mm steel implies, I think this case defeats the Corsair 450D unless you don't trust SilentiumPC, the price of the 450D goes down or you stick to brands.