Your opinion about helmets?

My parachute rigger has been after me for years to start wearing a
helmet when I'm wearing a 'chute. It always seemd kinda silly...

Today I was in the FBO when one of the local ag pilots got his helmet
back after a rebuild job. He rolled an airplane over on it's back
last year after an engine failure at 50 feet (big dose of luck,
excellent stick-n-rudder... totaled the plane but he came away just
scraped and sore). He also got back the bits and pieces left of the
original helmet... egad. His parting comment to me was that he'd
never fly aerobatics without a helmet.

Now, I don't do aerobatics in an Agcat at 50 ft, but his point was
heard clearly.

So, anyone used one? How much too heavy are they under g's? How
uncomfortable on a good day?

-Dave Russell
8KCAB