I await your substantive reply. Give me links to real models (even demonstrators) that actually achieve 5+ Lu/W (no papers please, already have craploads of them). Though this thread posits a magical '10 lumen tech', I'll let that one slide into the memory hole it deserves.
At least the industry's good for one thing: writing papers... there's still lots of trees and ink left for that at least.
By the way, this thread was started 08-14-07, but there have been no such devices shown, never mind commercialized. Guess all those phosphors and gasses and complicated little glass cell-thingies were just too much, eh?