SHARK EVOLINE....best helmet I have ever owned. Up until a couple of years ago, I was one of those riders who rarely wore a helmet. Then...a guy who works for me tripped getting out of a golf cart, fell and hit his head on the asphalt and died two days later. Got me thinking that my noggin probably would not fare well if impacted against pavement at 60 mph. I then started wearing the best half-helmet I could find and quickly became accustomed to it. Then....a buddy of mine laid his bike down wearing his half helmet...and basically crushed the bottom half of his face in. So....I began thinking that I am too good looking to have my face crushed in should I go down, and began looking at modular helmets. Tried on a bunch, and finally settled on the Shark Evoline modular after reading reviews and talking to people about it. The cool thing about the Evoline is that the chin bar actually rotates all the way over the helmet top and locks at the back of the helmet, instead of sitting on top of the helmet like most modular helmets do. Plus, it has the built-in smoke visor that works VERY well...no need for sunglasses or goggles whatsover. I've never been a fan of full-face helmets due to the weight, lack of peripheral vision, etc, that is until I found this one....which I highly recommend. You get the best of both worlds, a true open-face helmet if you want, or a true full-face helmet with the push of a button and the rotation of the chin bar.
Just Google the helmet and you will find a vast majority of reviews are positive.
It's not cheap if you buy retail...$350-400. HOWEVER....I bought mine off Craigslist for $175 and seller claimed it had only been worn twice...to which the condition in came in appeared to be brand new with box, bag, papers, etc. I see them on Craigs consistently for half the price of a new Shark...
Hope this helps. You can't go wrong with the Shark.