Thanks for this guys. Good stuff.

Adding a hand like 76s to either range means we’re gonna be bluffing at some point and at micros this might just not be profitable and we just don’t really need to do it to beat these games. This is gonna be the standard response with such a hand.
Yeah, I can pretty much count the times I've 3bet bluffed pre on one hand @ 5NL. You can get away with it against some 5NL villains, but they're few and far between. These players have insane 3bet continuing ranges, so 3-betting for value > 3-bet bluff. But at 50NL, so many villains have ridiculously tight continuing ranges so 3-betting as a bluff becomes much more profitable.