the N103 has been vastly improved on the old N102.
there is less noise due to the internal sun visor instead of the old external one
what i will say is go for the size that is snug as possible as the lining does give quiet a bit on this helmet.
there is the xlite version but thats around £80 more i think.
the chin vents can be a bit of a pain if they come loose from the mech, but easily repairable.
fitting the NCOM system can seem a bit daunting if your going for the full bluetooth kitk, but it fits and hides really well. also being the new bluetooth 2 it has solved the disconnecting issue when used with some makes of sat nav.
very comfy, slightly on the heavy side but hey, it's made of Lexan which is a very strong polycarbonate.
not a bad helmet for the money, it's main sellng point would be the integral NCOM communication kit you buy seperately.
helmet is £264, headset is £50, bluetooth unit i believe is around £160, so it soon adds up mate.
hope this helped m8