I am one of the old InterAKT extension user and I have all of their extension and developed several sites and after that the sad news we all know, later I purchased many extensions from DMX Zone but unfortunately their system is tooooo much complex to me, it kills lot of time and their system really I don't like. Now what I found that your WA extensions are much closer to the my beloved InterAKT extension.
I was reading the forum here and trying to understand about WA and I feel that I might go for your extension as it seems it will serve me also it seems that you are a helpful person and that is what a customer expect.
The biggest problem with the DMXzone's extensions is with the complete code lock.
For any problem, you need to contact their technical support and you cannot do it yourself.
I waited weeks (in some cases, months) to wait for the resolution of the problems encountered (a lot of problems... the biggest problem was with the lack of support of the IE browsers).
I prefer old server-side technology (with the possibility to modify the php code by itself).
It's very curious to note that DMXzone does not use its client-side technology on their website (see the source code of their home page). Themselves probably don't trust too much in the code generated by their extensions (perhaps also for the inevitable problems with SEO activity generate from their client-side code).
Old InterAKT and WebAssist offer more guarantees!