For followup -- so I took a shot in the dark and ordered a plain ol' Skid Lid (size large). Sho'nuff, couple days later a helmet showed up -- and it's smaller than a full face.
1) I really like riding with it. For all my neurotic training about "always wear a full face," I find it to be more comfortable and pleasurable to ride (At least on back roads).
2) Helmet fits very differnetly, but I notice that the Skid Lid has a little chin-cup doohickey that makes it more comfortable to wear than the other shortie helmets I tried on.
3) Wind noise is loud but tolerable. Obvious, I guess, but quite a discovery to me.
4) FWIW, check out Iron City cycles -- they gave me an excellent price online, and their service was top-notch (2 days on standard shipping to DC).
Rubber side down, y'all.
--Jaeger
