why not inertial confinement? Z-machine at Sandia has been already for 20 years generating fusion conditions. Livermore NIF got that "break-even" in the recent years, and with solid-state lasers the efficiency would at least order of magnitude better than the old lasers the NIF was using. And the only real Q>>1 fusion we've got working so far - H-bombs - is inertial confinement. So, in some sense inertial confinement is "just" an engineering problem of efficiently "taming"/reproducing at smaller scale the H-bomb with lasers or Z-pinch (or both at the same time, plus the magnetic compression that NIF added to the lasers to get that "break-even") whereis, as far as i see, any Tokamak (or any other magnetic confinement) is still yet to demonstrate any similar results.
