Hellhounds (before they disappeared) - loved the woods a lot more. The speedball was a little more intense too, but that was probably because the players were better.
Oldschool Frontline - it was okay, except for when the bridge would collapse and cause you to land on jagged rocks then roll into a river. I'm not sure if it's accessible anymore.
White Hills - I think it's an outlaw field... but one day the cops came up while we were playing looking for a dead body that was up there and said it was okay to play there as long as we kept it contained, so maybe it's not.
Frontline 2 is pretty cool I must say. The speedball is a whole lot better, (the bus is a deathtrap :0P). I don't know about the woods though. The woods are pretty fast paced due to the small size of the playing field and even when you are in your own base you have the feeling that someone is right behind you. It's pretty cool, but I'm used to a more slow paced sniper type woods, so take what you will from that. I have also watched the speedball field double in size since Frontline was opened, which is pretty cool. For the amount of paintball players in Newfoundland I say that Frontline is wicked.