Whether you're going for an OEM + look or a "how did they do that" look, LED's are a great option to pick.
Some of the more basic LED options:
- LED Halo; single color, multi color or switchback (turn signal)
- LED Strip; Same as above! These can go anywhere in the light.
- LED Tube; A little larger and a little less vibrant but more apparent in the light housing. Available in White or switchback.
- Model specific LED; Such as the 15+ WRX/STI C light
Morimoto and Diode Dynamics brand LED's come with a 3 year warranty as well.