I have a Z1R,about $100,no complaints,I l;ike it,but then again I cant afford the 5-600 ones,never have.Z1R got rave reviews on the comprehensive helmet test done a couple of years ago,scored higher than the real pricey ones,so I went with it.Personally I am tired of the people always saying 'get a $100 helmet if you have a $100 head'these are generally the pricey helmet snobs(lots of my friends)they never spend less than $4-500 on a helmet.F them,I go with the facts.If I can have a helmet that outperforms the high end ones then so be it.