Good discussion on fusion reactors

AN excellent discussion, with some very informed posters and varying opinions, on whether fusion power is practical and, if so, which of the many desings put for is likely to provide it.
COMMENT: This is something I keep goign back to. If there's a reasonable chance that we'll get to a working reactor, it's worth the high up-front R&D investments in the most promising designs. No other potential energy source has the advantage of near-limitless capacity that a practical fusion reactor would give us.