I am about to take delivery of my first motorhome, in which I hope to spend extended time touring in Europe. I think I. Have convinced myself that a refillable gas bottle system is the way to go. I have the following queries. Are the refillable bottles/ fittings interchangeable? Can you have a large refillable bottle i.e 11/13 kg and a standard calor bottle? Which system is best? gas it is cheaper than gaslow, and Alugas is lighter in weight. Thoughts advice please. The list of things I think I need/want is growing by the hour! Any other advice gratefully received. TIA