The only reason I can see to replace my current helmet with another one (dropped and deeply scratched) is the slots which allow ear defenders to be 'parked' on the helmet, and visor be slotted to the front.
I love the bump cap I bought for Debbie. Don't tell anyone, but I wear it when shes not on site. And nobody points and laughs.
Mostly the bump cap does what it says: stops me bumping my noddle on the scaffold. Whereas my helmet is just big enough to make me duck a bit more than I normally do - slips around when I don't want it to; and while its quite light-weight its a bit of a pain.
Mostly I'm on site on my own; mostly I nut myself gently (but painfully) on bits of scaffold. And nobody is going to drop a spanner on my head.
Cap or helmet?