[$5 - $16] QQ out of position and flop with Ace: ContiBet reasonable?

[2nd2none]

Hi there,

in [$5 - $16] SnG on Party or PStars with
QQ out of position, 3xBB raise and
1-2 (cold-)callers/SB/BB/Limp-filler.

Then rainbowflop with Ace-x-x appears.

What is preferable...

* Conti Bet
(which most guys will call at that $ level even they have no Ace, esp. on Party$11, so even they call I'm not sure what to do further...)

or

* check/fold

or

* check-raise?

I'm wondering every time which is best ROI choice...

[montagu]

i'd cbet half pot, fold to re-raise and check/fold on turn

but hey i'm no expert, don't know if this is best