Flop check awful?(100NL w/AA)

Sorry, I'm doing this from memory.
Reads:
Villain #1(UTG) has been pretty passive, seeing a number of flops and folding alot to cbets.
Villain #2(CO) has just sat at the table two hands before and stacked the donator of the table with TPTK.
Stacks:
UTG:100
CO:169
Hero(BTN):125

Preflop:dealt to Hero(AA)
UTG limps, CO limps, Hero Raises to 6.00, villains call

Flop: 3 A Q rainbow
checks through. I've always made my usual cbet with my made hands before today, but I've been feeling that I had to change things up a little. I've been getting outplayed since taking shots at 100NL. Bad spot to do this? or is it standard?

it's only standard if you think your opponents won't notice this is the one time you haven't cbet after a PFR.

You need to bet 1/3 pot here because if a broadway card falls kj, q10, etc may stack you.

Now if the flop is A 5 9 I definitely check...but people limp with broadway cards and WTF are you going to do if you see a 10 or K show up on turn and you are getting re-raised?

sometimes you nail your hand and take a small pot, it sucks. Everyone probably folds to you, but you have strong ROI here -- there are more outs that will make your hand hard to play than outs that give one villain a set