from 70-74 they are pretty meh, but once you hit 75 you get lava burst, which means a big jump in DPS. 5 x FS & Lava Burst will kill any non-elite. You can also spec for FS to get 35 yards range (40 with pvp gloves) which makes it ideal opener.

At 80 they don't scale so well at the moment, but we are getting some talent changes in the next patch which look very promising.

Cheers,

S.