Quads on turn...how much do I bet?

[elnino12]

Pokerstars NLHE $1/2 $200 max. Very first hand at this table, so I have no reads whatsoever.

Hero($200)
MP1 ($190)
CO ($170)

Hero dealt 3 [img]/images/graemlins/heart.gif[/img] 3 [img]/images/graemlins/diamond.gif[/img] in BB...UTG limps, UTG + 1 raises to 8, MP1 calls, CO calls, Hero calls, UTG folds...4 to the flop

FLOP ($35): Q [img]/images/graemlins/diamond.gif[/img] 10 [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/club.gif[/img]

Hero bets $16, UTG + 1 folds, MP1 calls, CO calls

TURN ($80): 3 [img]/images/graemlins/spade.gif[/img]

How much should I bet here...or is checking an option?