Outlaw... inexpensive and a lot of styles. I picked up a couple of these for out of state ride, though I haven't had to use them yet: http://www.amazon.com/Outlaw-V5-05-...&qid=1438603966&sr=8-7&keywords=outlaw+helmet
I figure within a year or so though, the Slingshot should be either classified or clarified to not need a helmet.