OK new to this. Question for the masters though: I see a number of architectural objects that have been created as models. At what point do you decide to create a prefab/model (using Blender or whatever fancy tools you have) rather than create the object using DR's tools (brushes, patches). I don't mean furnishings and fixtures - I can understand the need for intricate creation of hi/low-poly models, UV maps etc in a tool more suited, but for example, I see some arches as prefabs - but you can make pretty good arches using DR patches. So, are there performance benefits behind prefabs, or is it just to make them more transportable (to other missions, etc)?