Save a few bob by not having the Auto changeover. It is there so you can use one cylinder at a time & it indicates when you are on the second one and (when used with 'normal' cylinders) it allows removal of one cylinder whilst leaving the other connected. Now the latest Gaslow cylinders have gauges you don't need a reserve cylinder - you can see how much you've used by looking at the them.I am currently investigating getting the Gasglow system fitted to my Autotrail Apache, I have been quoted £535 for 1 x 11 & 1 x 6 kg tanks plus stainless steel pipes and auto changeover is this value for money or can I get it cheaper? And are they worth it?