I cannot handle your pugnacious idiocy today.

Uncalled for man. Im merely responding to the fancy LED fixtures that you linked that while they look amazing do no appear to have standard MR16s in them. A lot of the really cool ones have CREE XR-E or similar mounted on custom boards. While cool maintainability isnt all that great.

Here is the degradation curve of LEDs im guessing these are IDEAL curves based on perfect heat management. If you drive them hard in a hot environment its significantly worse.

Then there is the power-supply that always get omitted from the discussion. In order to drive the LED's correctly you have to have pretty clean DC power at a constant current. The circuitry for that isnt all that expensive but QC on many components is shit so its not uncommon to get flicker in LED's because there is a poorly rectified frequency in the output. Also these cheap components fail and when they do the whole thing becomes a paper weight.

Finally there is the whole color spectrum problem with LEDs. As im sure you are aware white LEDs are blue leds with a prizim so the color band is really narrow. Im surprised that doesn't cause you cinematography problems actually. For most application its not an issue but its worth considering. Personally i like the wide spectrum produced by Metal Halide but that's just me .

As for Livermore lights, they have their place in dark places like bars and certain coffee shops where you dont want to deal with fancy fixtures and its easier to put them in and get the ambiance you want than to do something else. Id never have them in my house though.