Thanks for the input and the ideas. Personaly I'm a bit against nr 1 too but many seems to like it - maybe with shoulderpads or armor like Warhead suggested. It'll be put on the shelf for now, in favour of the other two helmets in some mix but yes, probably #3 for grunts. I'm planing on arming the basic infantry with the plasma guns and thats why I was hoping for #1 because of the trans-red visor, but... not as it looks right now. Will have to see.
Nothing that'll happen next week though, as my girl comes to stay here. She accepts my hobby (and even rescued a lost minifig from the street the other day, if that's not love I don't know what..) but I wont push it