I'm voting Messer. Good solid consitancy. Braun is a wildcard and Todd isn't good at his job. In fact, Todd tried to run for Governor when Pence went to the VP slot. Todd looks out for Todd. Also, Todd is a bit of a jerk, see:
https://www.politico.com/story/2017/08/18/todd-rokita-boss-aides-staff-instructions-241709
https://www.politico.com/story/2017/08/18/todd-rokita-boss-aides-staff-instructions-241709