My trio of A bodies

Great stuff, guys.
I only have a few 1:18 models. Who makes the best ones these days? I posted in another thread that the Greenlight Challenger from "Vanishing Point" is a gorgeous model but it has a couple of lines that just wrong enough to be annoying.

You can buy nice clear display cases for them at Hobby Lobby. They cost about $7 with a coupon.

Then how do you go about obtaining a coat of scale "barn dust?" :D