Ive had ARMA for about 5-6 months. Played it once or twice in that five months, then a few days ago i spotted new patches for it and it was on the shelf so i decided to try it out with the new 1.12 patch last night.
Was on tactics and teamwork server, had a blast. The voip is amazing, made the game for me. In comparison to project reality, the stability and community of pr is better but the actual gameplay of ARMA is amazing. However i thought it was a little laggy, the ai on coop was a little jumpy when trying to fire at them.
But i will definatly be getting into arma, the game has so much potential imo. If you like teamwork and realistic gameplay, find a good server and your away.