Got two helmets at bike wise durham for £50 each which I thought was a grat buy. I also have an agv s4 I found that with the jiano Ian xl was the best fit for me (with the agv I took an xxl size. I personally (and my wife does to) found the jiano was a much more comfortable fit than the agv the wind noise was slightly better. The aerodynamics are very good I don't get neck ach like with the agv. I find the liner quality and component parts fit to be very good. I am very impressed with the helmet overall and as I wear glasses getting a flip front helmet is a boom. All this and the price I paid make this what I call a bargain. I am glad my white persuaded me to buy them as I knew nothing about the helmet at the time it just seemed a very good quality helmet at a bargain event price. For once I took a chance and it paid off handsomly.

Got the helmet because of the sun visor and flip front. The bluetooth was a bonus.
Found the helmet very good (yes they are noisy at speed). The ease of operation, comfort and value.
The only down side was the visor leaked even in very light rain (not safe at all).
Took it back to the shop and tried ALL in the shop and another 6 they had sent to the shop to replace my helmet and not 1 would seal.
I'm now getting another make.
I would get a Jiano if it sealed

The Jiano is a mid priced flip up helmet with a great addition, an integral flip down sun visor, that being a glasses wearer I find invaluable. The mechanism is located on the side of the helmet and can be operated, once you are familiar with the location, quite easily on the move. The helmet is fairly light and feels well made with a detachable well padded lining that can be machine washed. Observation to the side is pretty good although slightly compromised by the fact it is a flip up. The mechanism to flip the front is a button located under the chin and can be easily operated with a gloved hand. I'm not one for dressing like a power ranger so I like the plain range of finishes available particularly the matt grey which gives the helmet an almost thin rubber coated feel. On the down side wind noise over 60 is quite loud. As I tend to only commute and rarely go above 40 this is not a problem, if I was doing longer journeys at speed it could be a noisy trip.