Anyone here play any of the ARMA games?

Been thinking of getting arma 2, the game looks pretty cool.  If you have played what do you think of it? 

I played ARMA 2 about 2 years ago and vaguely remeber loathing it because of a very convoluted control system.

 

I'm pretty sure Arma 2 is free to play now on steam, It was last month anyway.

 

It's free to play but you cant max out the settings and maybe a few other things, but you can play ther game and go online and stuff.

As for the game... its not really a 'game' but a simulator and isnt fun or easy to play from the off.

Takes a bit of learning.