StarDrive is pretty fun, and it'll still be improved upon for some time yet. I've had fun with it.
Endless Space's very basic combat pushed me from away from it so I couldn't recommend it to anyone who likes to directly control combat.
And there there is Distant Worlds. It's probably the largest scope of these types of games and still maintains performance, unlike Space Empires V which gets shamefully and brokenly slow at processing turns in larger, long games. I don't believe the technology exists to make that game feasible. It doesn't seem to be able to utilize multiple cores, so you'd probably need an 8Ghz+ single core system for it to have a chance. But back to Distant Worlds The graphics are a bit simpler but they work just fine for the game. I like how the game has a civilian part of your empire that you don't control which is your passenger transports, freighters, and mining vessels. You control your colony and fleet, things that are government/military. It has significant empire automation aids as well to help when you have a massive empire.
I like how there are multiple automation options, not just automate yes/no. It has other options like suggestions where it will bring up a prompt asking your decision about various things from saying 2nd Fleet is ready and able to attack enemy colony at blah blah, should we send them? Or such and such planet in this system would make a good colony, dispatch a colony ship?
So yeah I'd suggest StarDrive and Distant Worlds.