I've got the Schuberth E1 and it doesn't leak but I've been lucky in the 3-4 months I've had it as I've not been caught in heavy rain (I ride everyday). I did get a little bit of misting under the pinlock on the lower centre right about the size of a 20p in very cold temps but it wasn't a big deal. The visor vent is very effective even when I have my screen up. The worst thing about the E1 is the peak moves about a bit in the wind under high speeds. It's a very comfy and quiet helmet, although I do wear custom made SoundEars.