I own one of the helmets. Very nice for the price. Problem with mine was that the anti-rust paint was applied after the inlay had been put in. So no rust-protection where it is most needed. ;-) That´s what you potentially get for buying cheap. Mark you though, not all helmets of this kind I was able to have a look at were like this.
So, still a reccomendable low-cost version in my opinion.
I ordered a helmet and the jack chains with elbows.. :-) I dont know how I will fit them but I am looking for a nice breastplate.
I am also looking for sources on how to add padding my Bishops Mantle (Aventail).
I found this picture which shows a whole setup with hood, and I am thinking about modifying it.
I still dont know how to do close to the neck. Maybe just line it with leather.