what type of plastic media are you considering? 3M starblast is some of the best plastic media out there..... walnut mixed with a little glass bead works just as well and is just as gentle.
Soda blasting is a preferred method for alot of people because clean up is simple. pressure wash it out! its safe for the enviroment so down the drain it can go.
regular abrasives tend to pool up inside body panels and can be a real pain in the ass to remove. This can present a problem if it decides to blow out during painting or primer.
A.j.
