I think in theory monk has the best dps, but it really has to work hard to achieve that. Im fine with that, the better the damage, the harder it should be. If everyone was playing optimally (and bards were using their songs (when necessary)) bard would probably be on the lower end. Even smn can do great damage...assuming they keep their dot's up all the time and use their other abilities such as fester, rouse, spur, etc, which unfortunately very few do.