Hi, I am making a map that will have a bunch of large cylinders as main geometry (grain silos to be exact), and I was wondering if any of you had some insight as to the best way to construct them. These are large cyliders (>400 units in diameter), with 32 faces and they will be placed in a semicircle with players able to move between the gaps. I know from this guide: http://www.student.ru.nl/rvanhoorn/optimization.php?chapter=func_detail that making them world brushes would bring vis to its knees, so I am thinking the best way to go is to make them func_detail. However--is it a good idea to make such large objects func_detail? Also, what is the difference between func_detail and func_brush? Thanks!