Before it got really hot (it has been scorching in West Central Florida of late) I took the scooter for a nice run around the County. Seventy miles or so. Still being "Babied" during break-in; no quick starts, no wide open throttle, no heavy acceleration. Have been up to 75 and 80 mph but got there slowly and only for brief periods. So far so good the GTI is performing flawlessly.
I will say this, "The Shoei is quiet!". The difference when wearing the off brand full face (it has a clear shield so I use that when I know it's going to get dark before I am going to get home) and wearing the bright yellow Shoei (with a jet black face shield) is night and day (pun intended)... The other helmet would appear to be OK. I mean compared to wearing the 3/4 white open face my cheapie full face seems to be a stout lid, with a reasonable seal around the visor and descent insides... However after wearing the Shoei for a 90 minute ride you can really feel/hear the difference. There is no air jetting by your ears wearing the Shoei. The padding is thick, but soft enough that you feel "Well Packed", not squeezed in. Overall the noise level seems to be a fraction of the less expensive lid.
Wasn't too hot either (and it was/has been brutal out lately).
I may just pass on a windscreen altogether.
I'm sure the other quality lids are quiet as well, but I am really pleased with my "steal of a deal" on the Yellow Shoei.