Bet or check behind turn

[werero]

Villain is Taggish and c/r turn fairly often. I don't know whats best between betting and checking. Hate to get c/r but don't want to give freecards to drawinghands either. So whats my best play?

Pre-flop: (5 players) Hero is Button with 9 [img]/images/graemlins/heart.gif[/img] T [img]/images/graemlins/diamond.gif[/img]
2 folds, Hero raises, SB folds, BB calls.

Flop: T [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/diamond.gif[/img] (4.5SB, 2 players)
BB checks, Hero bets, BB calls.

Turn: A [img]/images/graemlins/diamond.gif[/img] (3.25BB, 2 players)
BB checks, Hero ??