My first helmet, which I was wearing in a head on collision with a car was an HD Modular Style helmet.
I went into the side of a car at approximately 33 - 34 MPH (According to the eye witnesses) and I have to say that I walked away... (OK I crawled some of the way!!) when you look at the helmet, you can see that the visor was ripped off and there are three good collision abrasions on the helmet, but it saved me.
The helmet was a VERY comfortable fit, great for long and short journeys, convenience of a flip front etc... The cost of the helmet was about £200, but it's NOT about the cost, it's about the effectiveness and comfort.
You have to assume that YOU will have an accident and you WILL need your helmet to protect you... mine was donated to the Emergency Services for casualty training after they released me from Hospital .... been on the receiving end of their training
My latest helmet is very similar to my first...
http://www.harley-davidson.com/store/incinerator-modular-helmet-with-shield
I trust it and it feels right for me... snug fit, comfortable and plenty of air vents... it suits ME... and I'm the only person who can judge my helmet... so no matter how many helmets you need to try on... do it... find YOUR helmet.