I'm on my third Nolan modular (N100E, N102, N103). Most importantly, they fit my head. I suffered with Shoei helmets for a few years and a Nava before that because these were what the local shop sold. Major pressure point on my forehead...ouch! (Your head shape may vary.)
Then I saw a story on a moto forum about helmet brand and head shape. That led me to try a Nolan. I would not hesitate to buy another Nolan.
I got a couple helmets from Rider for a product test (I had to install a helmet comm system into supplied helmets; here if you care to read it
). I found the Scorpion to be a torture chamber in my size (M). I turned around and went home after about 20 minutes because it hurt so much. I would like to have tried a size L but that wasn't happening. There was an internal flip-down sun visor in the Scorpion that worked beautifully, better than the one in the Nolan.
I also got to try a brand from Italy called Vemar which I liked. The shell is a carbon fiber composite, very strong and light. It has the "Eclipse" paint which is phosphorescent and glows green. Cool idea. I wish the glow effect lasted longer, but I expect if you were out riding all day in the sun it would make you glow for a while after dark. Very plush inside and it came with two visors (clear and smoke), although you have to stop and swap them.
My advice is to get a helmet that fits comfortably so (a) you always wear it, and (b) it doesn't distract or fatigue you. You won't know how well a helmet fits until you try it on!
I used to get helmets to match the color of my bike, but I discovered that was like camouflage. I've spent enough time riding sweep in group rides to believe that you'll stand out best wearing a solid color helmet in white or perhaps yellow. I expect the high viz ones I'm starting to see are good choices, too.