what kind of bodyfiller?

I am just wondering what kind of body filler to use on fg sub boxes, just bondo or is there some other kind that is better?

Evercoat Rage Gold

the rage is the best to use, but it is a bit more money if you are using a ton of it. i use it all the time for the final coat. i have also had good luck with evercoat z-grip, and the microsphere stuff that select sells, the micro sphere stuff can be purchased at most napa stores for about 12-15 dollars a gallon, and works good for small build ups and shaping. it is a bit harber than rage, so it is a bit more difficult to sand.

thank for the info greatly appreaciated