I wanted to add a radiator and reckoned i'd get away with hiding the pipework behind skirting if I used 10mm. I've always found unrolled copper looks nasty when straightened out (not that it would matter when covered up I suppose) so bought a roll of plastic. I found it really awful to work with, I had an idea that when the roll was unpacked it would want to uncoil but no, it presents a real ballache when trying to place it straight, and found it difficult to shove it fully home into the speedfit connectors. In hindsight I wish i'd done the job any other way.
Just wondering how others get on with 10mm copper/plastic on a roll.