Thanks for your experiences. Ordered the wezmoto now and I am exiting how they work.
I have HEL on my Corsa and Goodridge on my Vectra as well.
@figo
On your picture, I see two flexible lines and a cunifer pipe in the middle as standard. On ebay wezmoto offers just one flexible pipe in the back. Its just a question how you fix them in a clean and good way.