I really, really like the 98/99 lights.
They have the dispersers behind the lens. I can do sequential turnsignals up top in the amber.
The only thing I don't like is that say, for example I bought these lights:
I was thinking of getting some aftermarket ones like that, opening them up and then changing the center red lens to a clear one, and then painting it amber. I could then make a clear lens for the top one, and have 3 lenses, red - amber - white. The only problem is that the reflector does not pass much light through it, and the rear facing reflector is on the red portion. I don't know if it will let enough light through to be as bright as I want. I do like the idea however of painting the black portion of these lights to match the body on my truck(s) - either sonic blue or glossy white depending on which truck.
I can't get fancy and do any body-matched painting if I do the 98/99 lights.