led kits have less of a chance of breaking (they are basically unbreakable plastic with diodes in them)
but they are illegal on streets (as are all underbody)

but i dont think underbody lights are rice at all

they do add a certain flare to a car, and i do know people who have put them on temporarily for pictures.

you really need to make a selection based on the color of your car. i know if i were to put LED's on a whit car i'd use blue because it sets off the the colors (think clouds int he sky)

i'd suggest using a color selection chart like you'd find in on a designer website for colors to find colors that set each other off

here are some good ones, remember that most tar or steret is black, so whtie lights are basically pointless cause they just light up under the car.

white/blue
red/violet
dark green/black

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man.. i really cant spell..leaving it this way for laughs, lol