As long as you buy authentic products, the quality is always good.
You can choose according to your own needs:
Generally, the s5 series is basically enough. You can also choose the s4 series with thicker tube walls, but of course the price is. upper.
If you have enough budget, you can choose higher specifications for oxygen blocking floor heating pipes.
Of course, there must be a good construction team, standardized construction technology and processes, as well as good other materials such as (styrene board, reflective film, etc.). I also need a good water dispenser and a wall mounted boiler haha
I hope this is helpful~