Purely personal opinion, but the Laser Z1 helmet is by far the most comfortable and best looking helmet I own. I have Specialized & Giro helmets as well but since getting the Lazer, I'm sticking with it and buying another.
The "best" helmet in the world is useless unless it's a comfortable fit and you like it and wear it. Try them on! And look for features like the MIPS and some of the new "cell" technologies on offer. And if that means spending several hundred dollars, compare that with a TBI. Ultimately you should buy the helmet that your head is worth. Which means most of our Senators & Congress members should ride bikes with "Dixie Cups" taped to their heads.