if your goal is to do well at champs or other end-game content, go berserker. it can hang with rogues and tamers. the defensive dexxer can't put up anywhere near the same damage numbers.
Ludwig, at champs I do better on leaderboards with an axe vs a katana as an LJ, considerably better. I think without relics it's a wash. But doublestrike and phaseshift are that much stronger on an LJ...
you playing again heli?