One fairly new-ish RTS that I rather enjoyed (and hasn't been mentioned yet) is "Sins of a Solar Empire". It has excellent replayability, fun multiplayer elements, and maps ranging from ginormous to small and brutal. It's a space-based game. You manage planets by building infrastructure, doing research, and building orbital buildings. There are 3 different resources: credits, metal, and crystal. Credits are produced by population and trade, metal and crystal are mined. There is an in-game economy, you can sell metal & crystal for credits, and buy them (for a markup of course). Different materials are required for different ships and techs. The biggest quarrel I have with the game is the severely limiting "fleet" and "logistics" research. Those techs limit how many fleets and ships you can have max. There is also a "culture" effect in the game, affected by trade and culture buildings which can allow less-violent tactics to be used. It has all the elements of large-scale turn-based games in an action-packed RTS format. To increase the action, pirates often go on raids... either randomly, or against a bountied target(s).

Overall, I have to agree with the "game informer" score of 9/10. It's good-looking, and not extremely resource-heavy. It's fairly intuitive to play (as all good RTS's are) but has depth in strategy and tactics to explore. The difficulty settings can keep you busy for many hundred hours.