Further to your brain bucket choices, I came across an article in Motorcycle Mojo Magazine that featured 2 new, "retro" styled 3/4 helmets, one made by Bell, one of their Custom 500 series called the Speed Soul (the black and white one) and another by Ed Hardy motorsports called the Flame, (gold flake and blue one). Here is the link to the mag, (unfortunately, the article is not appearing but there are pics)
http://www.motorcyclemojo.com/2011/03/retro-cool/ Both are DOT approved and, to me, are boss! The bee's knees! Cool as hell! (You catch my drift) The Bell does not have a removable liner but does come with dome snaps on the brow for the addition of a visor or face shield if one felt so inclined. The Ed Hardy does have a removable liner but doesn't offer the dome snaps. It does, however, have a clip at the back of the helmet to hold your goggle strap in place, for that uber retro look.
After doing a little digging, I came across sites for both helmets and their respective design lines complete with full specs:
http://www.thebellstore.com/Helmets/custom500.html and:
http://www.edhardyshop.lu/en/boutique-en-ligne/casques?page=shop.browse&categ... Unfortunately, all I could find after a quick search was this European link for Ed Hardy, but I'm sure you could find one or for a supplier closer to home.
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