I am hoping that a solid material helps with support. My experience using dual extruders with ninja-flex has been nothing but a pile of stringy spaghetti. Everyone keeps telling me that S3D does a great job using dual extruders with 2 different materials. I really hope I can get dual extruders to work well. A lot of the stuff I need to print depends on it. I bought the FFCP because all the reviews talked about was the high quality prints with different materials etc.