Cost of the Lights. Low-end recessed lights cost between $20 and $60 each. Higher-end, low-voltage recessed lighting can cost $75 to $150 or more per light. Each light requires a housing that goes into the ceiling and a trim that covers gaps between the housing and the drywall.
Key Differences Between LED and CFL Bulbs. 1  The LED bulb stands for Light Emitting Diode, and CFL stands for Compact Fluorescent Light. 2  LED bulbs are more energy efficient than CFLs. 3  The LED bulb consumes less electricity than its counterpart CFL 75% a year in energy cost.
I believe LED units to be better than CFLs. They do not contain Mercury, their light output spectrum can be adjusted to be closer to incandescent bulbs, and use even less energy than CFLs. That said, I do not know much about the carbon footprint of their manufacturing in comparison to other types of bulb.