If you're going with ESB and looking for a helmet I would suggest the following options:
1) A G2 [USER=5503]MachineCraft[/USER] or RS Props SE Hero helmet and having the damage removed to where it was for ESB filming.
2) A G4/G5 altered hero with damage already removed for an accurate ESB look. Viva Fett will be offering these shortly.
3) A FPH2 which will also be offered by Viva and also available else where by other vendors.
These would be the best options in my opinion for ESB paths.