Thanks for the useful, and interesting, responses. We are about to order new Pangas, as recommended on here (and elsewhere). Also a Petzl Rig as I can no longer use my Petzl Stop to lifeline with (thanks to my Update workshop session). We are going to stick with Petzl Pixa headlamps even though we have had three with failed switches as they do the job quite cheaply and we can use re-chargeable AA batteries with them. i would have gone for the Alpkit Manta as a good replacement but they don't seem to do that version any more. As for the age/lifespan of helmets we, in Staffordshire, used to follow the now outdated Scout Association recommendation of 5 years for fabric/textile equipment and 10 years for metalwork, 5 years for plastic helmets and 10 years for fibreglass/composite helmets. We now apply the manufacturers recommendations whether it applies to climbing kit or otherwise. I know that caving kit often doesn't have a specific lifespan but the amount of knocks that our caving helmets experience is probably far more than the average climbing helmet (certainly more so with my experience of my climbing helmets) so retiring them earlier rather than later would be our policy. I'm sure the Ecrin Rocs are OK, I've seen several experienced, and highly qualified, cavers still using ones that are more than 10 years old BUT.......! We are in a position of responsibility when taking young people on these activities and we feel that meeting that responsibility should not be swayed by financial considerations. And i'm sorry Idris but rock falls, stumbles, bumps on the roof etc are not uncommon caving and the helmet MUST be reliable at doing it's best to protect the head inside it.