We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember tonyjeffs
saying something like:

Aarrgh - need a break - I'm plumbing a new kitchen.

Lots of people say how good the plastic pipe is, and it is used on a
lot of newbuild, so I thought I'd try it.
But I hate it. It curls up on itself, you can't put a bend in it,
the joints are huge,

Use Tektite.

and because it is flexable I find I measure it
inaccurately.
So I'm going to bin it and buy some 15mm copper.

What do other people think?

I think you need more practice and to get the straight lengths of pipe,
which make it much easier to work with.