Giro Atmos Helmet I Want A Giro Atmos Helmet, But It's Expensive. Would A Cheaper Model From Same Co. Offer The Same Protection?

I want a Giro Atmos helmet, but it's expensive. Would a cheaper model from same co. offer the same protection? - giro atmos helmet

I will use the road bike too. Thanks to all who reply to my questions. I would like to reply, but Yahoo Answers does not have this option.