Hero has ATo in a full ring 1/2 game. Has a decent TAG image at this point. Villain is also a decent player to the best of my ability to read. Not too loose, not too tight. Bet sizing seems appropriate. Both Hero and Villain have 100bb's for stacks
Hero ATo middle position. Opens for 3.5bb raise. Villain acts in next position, calls. All remaining fold.
Flop A34 rainbow. Hero bets 1/2 pot. Villain calls.
Turn 5 for A345
Hero?