I haven´t tried the CX but I have owned his little brother, the Allwave Genesi, for a couple of years. I have found the built quality to be excellent, which is very remarkable considering that I paid less than 2000 euros for a brand new 12 kg boat (I am in the process of paying almost twice that amount to buy a similar-weight Epic V10L Ultra). Very light and comfortable boat and a pleasure to paddle. After two years of heavy use in all conditions, I have never seen a drop of water inside the boat and the pedals and rudder system remains like new.
A word of caution though: if you have big feet, try before you buy as this may not be the boat for you. I have average sized feet (43, European) and they are a quite tight fit in the pedals. So bigger feet could really have a problem with these skis. Again, this refers to the Genesi but from the other models that I have seen, I believe Allwave uses the same narrow pedals in all its models.