I've kind of intuitively gravitated towards this ever since energy efficient bulbs started becoming popular. Instead of buying light bulbs to save energy per se, I've been buying the highest lumen efficient light bulbs in a given form factor and color temperature. I prefer 3000K light indoors, and daylight for working lights. My desk lamps have 100W equivalent daylight "high CRI" light bulbs. My house lights are basically the highest lumen lights available in each form factor be it candelabra, "regular" or "fake luminescent". The light fixtures that do not have light bulbs per se are the highest possible lumen rating as well. I figure I'm spending less money anyway, might as well have more light. Unfortunately R30 flood lights aren't generally available in power rating equivalents beyond 75W incandescent. If some marketing person from e.g. Osram, Cree or Philips is reading this, could you guys make 150W equivalent R30 flood light? Charge pretty penny for it, too. I'll pay. I want punishing light levels in my kitchen/bar area.