Have had many intresting flights with turbulance, but the most extreme were some time ago eg carts /crew airborne 1960/70,s warning /radar improvments appear to have improved, or maybe I am just lucky. Fly quite often over ITCZ and have yet to suffer anything like some of my flights over same areas in 707,s in that period. Flying early Friday in UK into Europe and looking at storm forcast could be sporty trip, so may be back onto reserve judjment, but in my experiance Europe can not compete with ITCZ turbulance.