I wear a Troxel Legacy Gold Duratech in the charcoal colour. I guess technically it's supposed to be more English, but if you ask me, unless it has velvet it can pass for a Western helmet, too. And even then, it wouldn't be all that bad.
I have honestly not been too impressed by the Western options. I did try a Dakota Duratech in a similar colour, but I actually much prefer the Legacy Gold. It's sleeker and to me, that's what I really want from my helmet: something that doesn't cry out "I'm a helmet!" on my head. But maybe that's just me.
If I were to go with one from Troxel's Western line-up, I think I would go with the Venture, it looks stylish without being overdone. The Cheyenne is something I would personally consider far overdone.