Ok concentrate lastablility now I've had them since about march / april
Me and sichainey got 2 staffs each, we have only used them for shows and gigs (and a play at firegathering)and already 4 of 8 light units have been sent back (2 of his and 2 of mine). no drops & looked after, to be honest I'm a little disappointed even though "just gigs" is every weekend since May.
the switches seem to be the most likely bit to go although on on one of mine the green LED stopped working leaving me with red and blue colours.
Have got replacement ends but it's a bit of a worry, they work fine you switch it off then next time you go to use it it won't switch on because the button's stopped working. So if your using 1 in a show make sure you have 2 just in case it stops at the worst time, (although to be fair just 1 light unit gives a fair bit of light it just looks a little lop sided)