my suggestion
Stability, efficiency and documentation deserve top priority
For the time being I would go for A7
However I understand your point
I am studying in these days XNA 2.0
Intellisense ,as you call it, It is really a pleasure
The c# wrapper for A7 should come asap
If Unity will be available also for PC and DXSTUDIO removes some flaws than it would make little sense to stick to 3dgs even for programmming oriented people ,not to mention the artists