We're using a mix of both types of bulb right now. I've put the low energy bulbs where we use the lighting most of the time and where the light stays on for a while once it's switched on. The incandescents that we have left are used where the light might be on for just a minute or two as I have heard (true or not) that you can drastically shorten the life of the low energies by switching them on and off too fast and too often.