all this renderers support VIZ4, except brazil (it works with VIZ4 but its not 'officially' supported, heck it isn't even out yet)
you forgot about vray, its the only one of this renderers with a real & unlimited demo.
www.vrayrender.com
vray is probably the most advanced and underrated renderer for max.
[ August 08, 2002, 03:04 PM: Message edited by: Marc Lorenz ]