QQ, early-middle stages of 300+20

[DJ Sensei]

First hour, blinds 25/50.
Hero's stack is about 3000.
Villain A has about 1800, villain B has over 4000.
Reads: villain A minraised from EP with TT earlier in the tourney. No reads on Villain B, seems standard TAG.

Hero is in Big blind with Q [img]/images/graemlins/club.gif[/img]Q [img]/images/graemlins/spade.gif[/img].
Villain A (UTG+1) minraises to 100.
Villain B (MP2) reraises to 300.
Everyone else folds.
Hero calls 300.
Villain A calls 300.

Flop comes A [img]/images/graemlins/heart.gif[/img],T [img]/images/graemlins/diamond.gif[/img],9 [img]/images/graemlins/diamond.gif[/img] Pot is 925.
Hero checks.
Villain A bets 200.
Villain B folds
Hero folds.
Villain A takes the pot.

Questions:

Preflop: Is folding or re-raising better than calling?
Flop: I think checking is a pretty obvious first move. However, is there any reason to continue with the hand after the flop action, and if so, call or reraise?