what helmet...
A few guys at our company just bought the Gallet LH250 and absolutely love it. It's the most expensive but for a reason... it's a good investment I think.
I also got the noise supression kit which makes even a Jet Ranger a quite aircraft ;-)
PM me if you need details on what extras to order.
Would also be great if you get a chance at your company to compare your coworkers helmets... Gentex, Alpha....