I would say drg and mnk are equal at this point with some encounters better then one or another. Drg tend to be better over all for the newer content though.

They are both now far more powerful then range users by far. You can't beat a drg or mnk when there's something to hit.

Smn and blm are really hit or miss, they are in some cases even worse then a bad drg/mnk in the newer content. there's a reason for almost every class now, with exception of smn (because they still have some annoying issues), but smn can be really powerful in certain cases.