It is nonsense that going with the best choices available only matters at the highest version of content. People who are bad or worse at the game than the cutting edge progression players need every leg up they can get. Beyond that they are asking about FOTM which is going to be whatever the best players thinks is the best and plays the most. Not understanding that what is good or strong at a 20 isn't the same as say a 5, 10 or anything else is doing yourself a disservice too. Shadow priest and unholy DKs are a good example of this. As mobs live longer they fly back up in quality for higher keys, but both are kinda junk in low keys.