At 200lm/w it's getting pretty high up toward the theoretical maximum!
The new
6W Cree sorta-A-bulb thingy is only ~75lm/W, which though shy of the ~91lm/w for the 10W Philips L-Prize, but at a sub-$10 market entry price it's not a bad price/performance threshold. (
Street price on the L-prize winner is still north of $25.) Color rendering on the 6W Cree isn't nearly as nice as the L-Prize bulbs though, at CRI 80 vs. CRI 93.
I expect by the time my CFLs & cold cathodes burn out it might be hard to find CFLs on the shelf. Better LEDs have such substantial lifecycles the notion that lights ever needed sockets for ease of replacement may seem pretty archaic in a decade or two. Why would you ever replace it, unless you hated the color-temperature? LEDs will run cooler and will have a longer lifecycle if integrated into the fixture rather than self-ballstet, stuck on a century old heat-isolating Edison base design more suited to the abyssmal-efficiency short-lifespan 19th century lighting technology that some still find themselves attracted to like moths to flames.