Alright, played some Brink the past few days and enjoying it a lot.
It´s apparently unplayable if it pairs people from different regions of the world but SD is working on it. Played it with two to three guys from here and there were no problems at all, not even freezing. When it works, it´s a lot of fun and my initialy horrible aiming is getting better too
Right now, I prefer to play Engineer or Medic like I always do but those are also the classes I bought the most skills with, plus one of the guys I play with loves his soldier so much that we got that class covered anyway.
Still, I think Brink would fare better if they hadn´t invested any money in the SP-Cutscenes and writing and it cost around 20, 30 bucks retail.