[Crash]

By replay value, if you mean single player, then I think it has more replay value. Multi is probably about the same.

Check out the Demo, if you like it get this game for your fantasy fix and use SE for your sci-fi fix.

In my opinion, this game was 50 bucks well spent. Of course, so was SE.

About long run replayability... since both Dominions and SE are coming out with another incarnation next year, I wouldn't worry so much about that. The important thing, IMO, is that both games have a fan/modder base that has already made some mods that you can use if you think the game as sold is lacking something.