Some words about fit, weight, durability etc. would go a longer way than who wears themFanboy!
I only mentioned that, because the Kabuto IXA is a bit hard to get here.
I'm a long time D2 user because nothing fit my head nearly as well. I bought a D3 and the end of last season thinking it would be the same (and a better helmet for snowmobiling) but it's definitely a different shape. The foam in the back stabbed my head until I cut some of it out. If I kill it, I'll be looking at something else at the end of this year.
Those things any good? The D3 "would be moto certified if it weren't for the vents" deal pushed me towards them. I'd be looking for something similar.