hey, don't forget XNA here!!

@ratchet: If you want a programmers engine, take XNA!!
Only thing good for designers is the "direct" FBX import (without animation of course!)

i really like gamestudio but i recently switched nearly completly over to XNA because i can program my way (which means i try to clone the gamestudio API )
but XNA has some advantages over gs:
you program object oriented.
that's all