I have tried the Wolves Den once and it was turrible Kenny, just turrible. Frontlines is incredibly fun. I've played a lot of other games with some large scale PvP and this hits the right sweet spot for me.

I think most people are complaining about how slapped together the Den is. Also, there was some uproar about how the Frontlines teams were split, but that seems to have died down quick. So frontlines good! Wolves' Den baaaaaaaad.