Advice on barrier pipe please

[AMEdinburgh]

I need to run two lengths of 28mm plastic pipe under my floor for a primary supply and return to my thermal store. Where I have used plastic underfloor in my project I have used JG Speedfit but they don't do a coil.

I've used polybutylene Hep20 in the past with no problem and I see they do white barrier pipe.

Is there a clear favourite or are they much of a muchness?

I'll be grateful for any constructive comments.

 

[dcawkwell]

Stopped using hep20 because of their stupid new fitting that you can't
remove without a tool that I can never find when I want it.

Started using polypipe instead.