That seriously kicks ass man. The render is awesome, and the reflections... wow. That had to have taken some effort. The only downside it has to it (in my opinion) is the blank blue corner. I want to keep focus on the render and "architecture", but my eyes are constantly drawn to the blue space, and not in a good way. I guess to me it seems like something should be there, and it's not. I think even shading would take the starkness of it away. Just solid color is as if someone came along with an eraser and wiped out everything but background color.
Overally though, man, great piece. I have to it, and if you ever decide to make it a wallpaper, I will definitely put it on my PC.