the modular helmet story is quite easy:
first category: mod helmets that passed the european safety tests in the same class as 'jet-helmets' (meaning the locks or oscilating bolts snap in case of a heavy crash)
*SHOEI synchrotechII: pretty expensive but nice and light. interior isn't washable but is very comfortable. opening system takes some getting used to, it's push and pull at the same time.
*HJC: kind of a Shoei copy... a bit heavier, but you get more space for your chin. interior is comfortable. easy opening, but could get fragile after a while (it's a plastic lever...) price/quality wise a very good helmet. has a lot of 'pull-back' when you drive with the helmet open though
*LAZER: one word: HEAVY, very heavy but pretty solid. very good interior but the morpho system 'gives' itself very much so be sure to buy it really tight.
CABERG: best look, but very unpractical and heavy (less than the lazer though) the built in sunscreen is too close to the eyes and rests on your nose...
NOLAN: good helmets but a royal pain in the #ss to get spares.
VEMAR: pretty much the same thing as the HJC but less quality build...
ROOF boxer: great looks but don't count on any form of protection...
Second category: helmets that passed the same security tests as full-face helmets
*SCHUBERT concept C1: great helmet, and very quiet. carbon reinforced with a steel bar to secure integrity in case of a nasty crash. washable inners. Good sunscreen. easy and solid opening, using only the left hand and without obstructing the line of sight. downside of all this is of course the price... but i know stores where they come cheaper than the shoei. IMO it looks awful.
*SCHUBERT concept C2: evolution of the C1, generates even less noise at speed (86 dB @ 60mph) and has a more ergonimic shape and finish. it looks better than the C1 as well. will be available by may 2004
HTH,
J.S.