I have the Soviet Red T9X.
Airflow is fine. There is a big gap at the bottom of the front panel for inflow. Mesh on top which allows two fans for outflow. There is a sponge dust filter which I discarded because it blocks airflow and not needed for outflow.
Poor build quality. Looks great but there is a lot of plastic used. Deal breaker was that the HDD cage on top is fixed and cannot be removed. This makes the interior very cramped when putting in an ATX MB.
Poor cable management. There is enough space at the back for cable management with the usual cut-outs. However, the MB has a big rolled edge which creates a hump the cables have to cross over and this makes it difficult to close the back panel.
Overall, I liked the case and can work around the limitations. However, there are much better cases out there at a reasonable price.