Arma 3 BP and KoTH are my staples.
Not tried wasteland or altis life, what are they like?
Do yourselves a favour and get on the EUTW CTI servers. Proper PvP without any of the stupid massive icons over friendly heads and *shudder* perks.
I play A3 but not public server, I'd rather stick my Johnson in meat grinder, which means I won't!
What are the differences between CTI, annex and invade and insurgency?
Why would that be? Some great gaming to be had online with ArmA, I really really loved the SP campaign and would pay full price for the game just for that, but you are missing loads of fun by not multiplaying it.
I meant, I'll play with a community on a closed server fine - I just can't stand the chaotic nature of trying to play as a team on a public server, no structure and you meet a lot of ..uh, well the world is a big place and there are a lot of idiots