What does Langdon seem to be trusting Sophie more and do you agree with his decision to do so?

Langdon's attitude so far appears to be one of deja vu and disbelief. Langdon can't understand how he got himself into another mess as he experienced at the Vatican before. Moreover, he can't understand how he found himself the prime suspect in Jacques' murder. Langdon also seems very unsure of what to do or who to trust, as he should be. At this point, though, Langdon seems to find Sophie to be more trustworthy than the police. This is probably due to the fact that the police planted a tracking dot on him, in combination with the fact that Sophie had a pre-recorded warning message for Langdon. Both things cause Sophie to appear to be on Langdon's side. However, at this stage of the story, I would not trust Sophie or anyone else, if I were Langdon. Not enough information is known yet.