I've not used Venair water hoses but I am using their boost hoses. Quality is decent but some were a terribly tight fit..to the point of making you believe that they aren't the right application!
I'm not sure if Venair actually applies the right kind of silicone for their water hoses. If its just the regular silicone they are using, be prepared to top up your water quite frequently as silicone as a material itself is quite porous! If i had a choice, I would just use the factory EPDM rubber hoses.