Well, you are out of luck my friend, Encore has been discontinued, and I no longer part of the Adobe suite of apps. And, the list products you attached are upgrades from older versions, you cannot simply choose one and install that as a trial just because it's free, it just doesn't work that way.
David Roth Weiss
David Weiss Productions
David is a Creative COW contributing editor and a forum host of the Apple Final Cut Pro forum.