If any of you are military sim buffs and haven't played Arma 3, you're very much missing out. I highly recommend picking it up. While it does have a great amount of single-player content, playing it in MP, and specifically with TeamSpeak and TaskForceRadio is simply amazing. Easily worth $30 IMO, especially since the community is extremely active.
The way BIS does their DLC is well done and doesn't fragment the online community either. If you don't own the DLC then you cannot be a pilot (or gunner?) in the vehicle, but you can still be a passenger. Any of the new features, such as the new helicopter physics is free for everyone as well as part of their "platform updates".
I was tempted but then I looked it up on youtube and it looked a bit too complicated for my tastes. Little things like needing a mod to edit loadouts which then need to be exported and you have to modify scripts just to use them? Maybe I got it wrong but it looked more like a modders playground than a game.