Craig, I actually like Rebirth. But the only thing is you need it updated to the last update out. 3.53 is the newest one. Plus you need a lot of the mods the guys are making. Some work well, while others are so so, and some won't work with other mods. But those usually are older mods that have been updated, or won't work with 3.53 I can't even begin to remember how many mods I have subscribed to...... possibly 50.
While the graphics are really good, game play takes a lot of getting used too. It not like playing XReunion or X3 Terran Conflict. As for TC on Steam, I don't like it at all. It has only one update and that's not all that great. I need the stand alone copy to use Cycrow's "cheats" to have the Vidarsaurus and the fleet of ships you can have right from the start. ;)