BU and BB are playing 1/2 NL 6 max. BU is a looser sort of regular who plays with a 40% attempt to steal blinds and plays pretty straight forward on flops: Bets most air and good hands, checks back medium and weak hands. BB is a regular-type too but slightly looser of a cold caller from the blinds than people may be used to seeing.

Folds to BU who standard opens to $6. SB folds and BB calls. The flop comes Ts7s3c. BB checks and BU fires out a cbet of $10. BB calls. Pot is $33.

Here is the exercise:
1. What turn card is the best for the BB and why?
2. What turn card is the best for BU and why?