I have all of these and I use mostly IC3, Cyclorama and Woodland Playset. Depends on the kind of scene I'm making and also on the textures I have for each of them. There are many free textures for Cyclorama, much more than for the others. This is a big incentive to use Cyclorama in my case. ;o)

France, Proud Owner of

KCTC Freebies