A week or two back I head over to Home Depot for a couple of ordinary PAR38 outdoor flood lamps. They have 90w halogen Philips for $12 a pair and $14 for the GE version. I buy a pair of the Philips and head home to install them.
The other day another lamp burns out. Back to Home Depot. Same store but this time the two pack of Philips are gone replaced some kind of eco (lower wattage, same output) lamps for $20 per pair! I'm not about to do the math on potential savings so I keep looking. I find a pair of Philips compact fluorescent lamps in a PAR38 for $11 per pair. Of course, "warm white" isn't quite the same color temperature as a halogen lamp, not that it's a big deal in an outdoor fixture.
I want to say the eco halogen lamps used 72 watts, the CFL 23 watts, and if I wanted to spend $52 they had an LED lamp that used 19 watts.
When the heck did buying a light bulb get so complicated!