Maybe i'm wrong, but with the standard/extra edition you can't do multiplayer games? The free Lite-C version is based on one of these two. However, if you buy A7 commercial you get Lite-C for free (in the package) and it should be feature comparable with your gamestudio edition.
Enet rules It doesnt offer any "higher level multiplayer gadgets" (like solving stuff that should be solved with some dead reckoning alike scripts) its basicly a UDP lib for transporting packets across net. It does have some nice things that UDP libs usualy dont have. Was created for one FPS game and it offers decent performace for that job.