The great thing about the flip up is that it gives you much more "freedom" for petrol stations, having a quick chat, blah blah blah. I've only ever used flip ups, and would be very reluctant to go for a full face for this reason.. also on a summers day, or touring europe, dawdling through towns, it's lovely (although probably technically illegal) to ride with the flip up. I couldn't imagane anything much worse than sitting in stationary traffic at lights or jams etc, on a hot day in a full face lid. of course, with the Jet modification for the System V, this will no longer be an issue!!