Which type of water pipe is better?

Which type of water pipe is better?
Hello, I'm YongThree, a KZbinr.^^
Today's video is the pros and cons of water pipes.
The three most used pipes were prepared,
We briefly explain the location, advantages, and disadvantages of each type of pipe.
My level of knowledge is not superior, so I can't go into detail.
Thank you for watching.^^
#Water pipe#pb Acorn#xl Excel#Stainless steel corrugated pipe#Piping type