Hi Paul, I was about to reply last week but the server went down.
The helmet I have is made by Bieffe in Italy, they are a subsidiary company of Bell helmets.
I can't tell you anything about Davida apart from they look well made, are made down the road from me in Liverpool and use a smart looking chick in their adds.
The one thing I do know about them is, although they conform to European standards, the last I heard was that they did not conform to British standards and could not be used on the roads in the UK.
I am not sure that this is still the case, but if you can get a Bell helmet for a good price, then go for it.
I got my race helmets at cost price from AGV but the retail price of the Bieffe was cheaper than AGVs cost price.
It cost more in time filling out contract forms, I thought, sod it and bought the Bieffe.
Sam.