think a will mate got a low end copy just now but will have a look cheers again
Yeah there are some "options" for you, and here is what you can probably consider:
For helmets found from members here and reputable sources, you will likely find that the thickness, the measurements, the size, the material will be almost alway ssuperior to the rubies supreme that is out there, mainly because folks making replicas will strive for that little bit better perfection, but the differences in that is something to consider as the price for a fully finished bucket can be several times that of a rubies.
Now the rubies, being the inexpenisve alternative often suffers from warping, "strange eyes" (look up the rubies helms folks have posted,you will see), and the plastic is about half the thickness as seen in the films, however, for an at first glance vader helmet, it will certainly doo the trick.
Personally speaking, if this were something that was just to be on a mannequin in my living room, i would just go with the rubies.
But for trooping or putting on display somewhere else, i would weigh in exactly where i was wearing it or where it would be displayed.