In reply to Castleman:
I've got an Elios (which replaced an old Edelrid Ultralight Fluro - what a gem) which I really like and very confortable. So much so (and due to the closer profile to the haed) that I'm wearing a helmet loads more than I used to. Can only be a good thing.
It'll give you more protection in a fall than an Ecrin rock (I think) but a little less on big mountain routes with an avalanche of choss and crap falling onto your head.