Looking at getting Ravenmark: Scourge of Estellion, Machines at War 3, or Starfront: Collision. Wonder which one you guys like the most. Will eventually get all of them but want the "best" one now.
Out of the 3 you mentioned, I would recommend Ravenmark:SoE. I do agree with Autumn Dynasty being a fantastic RTS though.
I highly recommend the two Ravenmarks. Autumn Dynasty is nice too, but a lot shorter. When you are through with it after the weekend, go for Ravenmark. And if you like SF strategy, take a look at Starbase Orion (turns) and Imperium Galactica 2 (realtime).