I will start off by saying that at first I was put off by this game. Earth 2150 felt shoddy to me at first, but then I started to actually play and began enjoying it more and more. There are a few nags, like the campaign is a bit oddly laid out and takes a bit to get used to with your main base being played on simultaneously as your current game, there is nagging pathing issues that occasionally annoy, and certain weapons don't seem as good as they sound and get owned by another unit with no problem.
Get past these, they are valid cons, but if you just pay attention to building up your army and winning, then the true fun comes out because all those are minor things you forget about once you stop looking at them. They are that small of a nuisance. Simply pick an army you like and simply play, then you will be like me and get hooked on Earth 2150 after a good 4 hours of trial and error.
By the way, before Impulse came out I had this game on another Stardock store and forgot what it was called, had red and yellow letters in the name though. Anyway they sorta went under and that in turn had me lose my first copy of Earth 2150, and I do not regret buying it again.