I'm also super excited to get my hands on the new HA wings. For a good explanation of the differences between the new GoFoil 'GL' wings compared to their original range you can watch the 'GL unveiling' videos (in 3 parts) - link to first one below.
I expect there are differences in performance between different brands, but the GoFoil HA wings are meant to glide through the water super fast and smooth - once up and flying they don't slow as easily which makes it much easier to connect bumps. They also turn and surf pretty well  - you can see no end of videos of various people ripping it up on Gofoils in the surf, mainly using the GL180 or 140. Search YouTube for Austin Kalama or Derek Hamasaki or just type in GoFoil 180 and you'll find loads. They are also pumping machines. Austin Kalama connected 25 waves in a row on the 180.
The downside to them is they haven't got quite as much initial lift, so are a bit harder to get going, and people say they are more sensitive to pitch as well. These traits means they aren't the right choice for a beginner, but most people say that as soon as you can ride reasonably well you're ready to use them.