i am with Sid here. I once joined a little team using unity, editör may be shiny and pretty, but the situation the otherway around in Unity. Level design lighting etc is good and easy but this time you have to workaround stuff in coding part. Then i figured prototyping with unity was not that fast i protoyped stuff in lite-c then gave them flowcharts and algorithm explanations and working lite-c demos, got my money and ran the hell out of there.

First i thought it was because i am more familiar with lite-c and it was not unity's fault, but then i started playing with UDK and figured it was indeed unity's fault.