I should probably start another thread for this next discussion, but maybe this is as good a place to bring it up as any.
Has anyone heard of the ReeVu helmet? It has a fully optical (non-electronic) rear view system. I'll find some good links to add to this post, but you can find info at (go figure)
http://www.reevu.com. The helmet is good-looking, as well as extra functional. It comes in different colors and styles, including a convertible model for glasses wearers. The price is about as much as any premium lid, but not even as much as the average Shoei. Here are some images.

and

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This is in the company's future.

Best ride ever taken? The last one. I live for the next.