Accoya vs high quality pvc sash window

[PrueCallista]

Does anyone who has tried both have experience of which is better at keeping the house warm?

And for those with accoya sash, have you had to repaint at all within 5 years?

We’ve just had our old wooden windows replaced with accoya and our house is so much warmer! Not able to compare to plastic for you but they seem to be as good as the uPVC we had in our previous house extension. We’ve had our stained not painted, joiner has advised we’ll need to revarnish in 2-3 years