A note on Focus Fusion, mentioned in one of the questions: in 2012 they published a paper in Physics of Plasmas, the leading fusion journal, showing they'd reached the temperature and confinement time necessary for boron fusion. Right now they're on the front page of Indiegogo (in the "trending now" section, hit the right arrow) with a $200K campaign for the next piece of equipment they need, a beryllium electrode that they think will improve the plasma density.