I have both as well. I also have the DNA Microcosm which is far superior for "building environments" directly in Poser. If you want "quick" either cyclorama or Mil Environment is fine. If you really want to create the best environments though, an environment creator like Vue or Bryce are the very best. If you're a DAZ PC club member and have played with DAZ Studio, you can get Bryce 5 with the built in exporter very cheap right now. You can then use DAZ studio to export your characters into your environment created in Bryce.