Accurate Star Wars helmet or not ??

I would like to hear from the professionals here if these helmets are ok and somehow accurate. If not, is there anywhere else to get good helmet replicas and not over expensive? Thanks in advance

HOME - newimage58 prop movie replicas

HOME - newimage58 prop movie replicas

HOME - newimage58 prop movie replicas

HOME - newimage58 prop movie replicas

Revenge of the Sith Clone Trooper Helmet

Attack of the Clones Helmet

Stunt Helmet | RS Prop Masters

Thank you.