I just bought a Samshield. I really like the look of it (got it all black, same fabric all over)and some people do a really nice job with all the custom options available. It's not as vented as say a GPA but definitely more then a Charles Owen. The real reason I decided to get it was that you can order different linings. I got one that fits my head with my hair down, and one that fits with my hair up. I must admit that was the real draw, but I also ultimately decided I like the look of the Samshield better.
I couldn't decide which fit me better and went with the Antares, but in hindsight wish I'd gone with the Samshield instead.
My current favourite helmet though? My SO's OneK. I LOVE it. Love the way it fits and looks. The next helmet I purchase will be one. Fits me better than the Sammy, GPA or Antares. Wish I'd been able to try one on before buying the Antares.