I must confess to a habit.... I keep buying helmets. Since I quit smoking a couple of years ago, I justify the cost to myself by not spending 5 quid a day killing myself. I wear specs full time, and have only recently tried contact lenses. I commute 30 miles a day on a mixture of Motorway, dual carriageway, A road and inner city urban streets. Also do at least 2 European jaunts each year, so have all round demands.
OK. In the last 3 years I have bought, rode in, moved on or kept the following:
X-Lite flip helmet. Crap opening lever, smelled funny after a few weeks.Very light but too damned noisy, even with earplugs. Moved it on
Schuberth S1. Fantastic lid, ultra quiet but had the problems with replacement visors, after 4 changes I had a row with the retailer and got my money back. (Rode back from NI in the dark via Stranraer (A75 antone? Trucks, tractors, road full of cow shite, with the visor up coz the coating peeled off and starburtsed in the rain and sodium lights!
Shoei Z1. Beautifully made, but cocked up by buying the wrong size, so moved it on. Pity that, a really nice lid.
Schuberth C2 Concept. All round super lid at first. After riding in all weathers
got fed up with the weight of it and the crap lining on the inside of the visor (again). Moved it on.
Shoei Syncrotec 2. Nosiy, rattly, absolute shite ventilation, but with a pinlock it redeemed itsef. Always found it a good fit and the single chin button makes it a doddle to open. Still wear it now and again coz it's like my favourite old boots. Over 10K miles with this one now.
BMW SportIntegral. Yeh, I know, another Schuberth. Local BM dealer selling 'em off for £70, couldn't resist ( 2 weeks ciggie money

)
Again, superbly made, chin cover keeps draughts out, great with specs, superb ventilation, but that feggin awful coating on the inside of the visor again. When it does mist up, the coating seems to hold the mositure and reamins misty the rest of the lourney.
Arai Astro J. Sorry I bought this one. Can't take to it at all. Waste of money for me.
Arai Tour Cross. Best lid yet? Just arrived this week. I'll let you know.
More money than brains? Not really, I don't smoke any more. (26 months = approx 760 days at £5 a day = loads of new shiny kit instead! Think about it if you are a smoker)