Hi Bellrider
I had the same problem in Austria... if only there was somewhere you could just pop round to try them all on!!!
After a ton of research and asking everyone I could, I settled for the Alpha Eagle with a dual visor (dark & yellow) with a CEP kit for slinging doors off...
Go to
www.aviationsurvival.com as tehy are really quick and helpfull. I tried various companies accross Europe but their response time to my requests was about the same time it took aviation survival to send me the helmet
Like they don't want the work here!
They will also send it through the post with a substantially reduced invoice so you won't end up paying a huge import tax
But, like others have said, the best is to try each one on and see if it fits YOUR head. Best I can suggest is to go visit the medevac guys as they will ostly fly with helmets and ask if you can try theirs on...