I made a thread on here a few weeks ago to try and help me decide between an Alpha Eagle or the 200 (by the way thanks for all the help on that one guys). I eventually decided on the 200 just because I liked the feel slightly better, and I actually like the visor mechanism on the 200 better as well. They both look like great helmets though.
I currently have a gentex sph-4 with the oregon aero upgrades and really have to complaints about it, the web lining definitely makes it nice and cool, and its pretty comfortable. My advice would be to spend the time to go to dealers and try the different brands on, you may find things you personally like/dislike about certain brands or models that don't get covered on here.