The FX is 501st approvable, and at one point was the only option for armor - that's not the case anymore. As others have said, for another $200 or so, you can get a more screen-accurate setup. Sure, you can buy FX with the plan to upgrade later, or you can "buy once, cry once" for something more accurate. The choice is really up to you. The one caveat when buying used armor though is that since it has already been trimmed and assembled, it may not fit you without modifications. If you're set on buying the kit, I'd find out the seller's dimensions to see how much you may have to trim or add to the kit to make it fit you.