I am currently informing myself about alternatives to Omega and the like, and GLScene seems to include those features that I am interested. However, I was wondering: how good is the collision detection system included? Can it detect collisions between different objects types? What about with sprites? Can it detect rotated or scaled sprites with transparent (non-existent pixels?). How fast is GLScene on different computers?

And I was wondering if there are any GUI libraries/extensions already out for GLScene - making a GUI from scratch in a graphic renderer was always my least favorite work. ops:

Thank you for your comments!