No currently operating device is 'attempting' to achieve Q_total; they are all physics experiments, not simply searching for a magic combination of knobs that will ignite the plasma.

The Europeans are doing quite a bit of preliminary design scoping and engineering for DEMO, a 'demonstration' reactor which is supposed to come after ITER and generate net electricity, but there's not been a site selected, for example. Similarly, Chinese researchers are working on their CFETR, 'Chinese Fusion Engineering Test Reactor'.