At least in theory, they're more power-efficient and last longer (though, as this article suggests, that may or may not be true). Things that are pretty much u

At least in theory, they're more power-efficient and last longer (though, as this article suggests, that may or may not be true). Things that are pretty much universally true, though: they turn on faster, have no warm-up time like most CFLs, are more often dimmable, and typically have better spectral distribution (though not as good as incandescents), which tends to make them less likely to impart the sickly cast that things lit with CFLs take on.