Actually I'm ambivalent about SoTS. The strategic side is a bit too abstracted for my taste, as I mentioned in the "Sins of a Solar Empire" thread. A good tactical game could make up for all the strategic abstraction, but there's a problem with SotS tactical combat: I really, really suck at it.
However, so far I've only played one of the two demo races, I've only played 1 vs 1 against the AI, I haven't found the end of the demo tech tree, and I've never played more than about half way to victory or defeat. So I intend to play the demo a lot more before making up my mind.