I've noticed shamans and hunters both being a lot quicker to react defensively than other classes. Warriors more often than not are too slow. We hit 1800 last week after like 240 games played lol, I deffinately did not have the dominating experience that some did here. But I'm also rolling with a brand new team of shamans wearing wellfare epics ( just hit 80 last month ). That being said I was having trouble killing well geared targets but thats only due to not having engineering lvld yet and having low spell power still ( 2800sp without tow .. looks like it will jump to 3200 or even 3300 in full wrathful ). I use a lot of the same kind of keys as krushpak details above but I just recently started playing with the hex one .. its actually extremely nice against teams who blow divine sac right off the bat, buys enough time to wait that out(while purging the shit out of their entire team) instead of wasting time and mana nuking into it.