I have now had this flash since April 2012 and this on some events in use. So rule of thumb that have been probably not in 2000 triggering the flash. Been? YES because suddenly the flash tube was broken. Unfortunately, the evening at a Halloween party. * Sigh * The dealer has replaced the unit directly without hesitation (just had to pay shipping) and now I can get rid of flash :) From the use of flash is okay, which have indeed most already written here. I miss no other functions because I usually flashes ETTL or unleashed by remote release (radio).