well,"better" is a matter of opinion when it comes to FG over ABS. Ilike the ABS as its lighter and looks great if made and painted correctly (take FP's armor for example). Fiberglass i guess you could say is closer to "real armor" but is heavier and can crack id think a little easier than the semi-flexable ABS. But again,this is my opinion. Both are good choices for quality. First and formost,do your homework on makers of these items so you dont end up with re-cast ABS or fiberglass armor that is below par in quality but priced just the same as quality armor. TDH is a GREAT resource for this info!