I have switched most of the light bulbs in my house to energy-efficient CFL (compact flourescent) bulbs -- except where I had three-way lamps.  Three-way CFLs are hard to find, expensive, and lack the long life that can turn them into money savers.  But with a fixture like this, I can use CFLs of different wattages, or I can choose to light one or both bulbs, depending on my needs.  This fixture is attractive and high quality, though the antiqued brass is a bit darker than I expected.  Highly recommended!