[soah]

I have no experience at the 600s, but in the 400s if you raise big from the blinds you will almost always take the pot on the flop, and betting full pot is just throwing away extra money -- they know exactly what you're representing and will only play if they can beat it. I generally bet around 60-70% pot unless there's something very unusual about the board. A bet of that size is enough that attempting a bluff-raise will be pretty expensive. Not many people want to risk a quarter of a buy-in to see if you're capable of laying down AA on a dry flop.