I think , with increasing technology each year like
SSAO, Deffered shading, surface shaders, new tools and
Torque 3D, Shiva , Unity going strongly fast in development,
users will prefer to buy Unity Pro indeed than A8 Pro.
(I don't talk about Gamecore, it's like a dead engine, showcaes is like dead, even the last post in showcase is from 17 August).

The main difference for example , others tools like Unity,Torque 3D, shiva, gamecore have all integrated in the main world editor (complete terrain editor ,physics, shaders ...) That's the weak point in 3DGS.

The other points that are lacking, is no game browser plungin integrated , and no mobile support like Android, Iphone. That's sad caus there is a big market here, accessible for lot of people (making an iphone doesn't require as work as a next gen game).

I don't think serious people will go to Pro version of A8 it can't compare with Unity Pro.
I think 3DGS will continue to survive in terms of price by selling a unique version at low price like the commercial version for example.

Some points that makes 3DGS solid are :
- For beginners in game coding or kids, using MED instead of a modeler and WED with BSP can be lot more easy for them i think also.
- The documentation and AUM magazines that covers all aspects of coding.