I trust the cops in this case, because I think they're doing a darn good job, at least the best they can in the impossible situation that Caylee's mom has put them in by giving no co-operation, no truthful, verifiable information to help locate her own child. The cops care about finding this baby while her own mother 'dates' guys parties, lies, steals, and spends time on the Internet and baking brownies to take to her lawyer, who probably ate them. The police really appear to want to find Caylee. Mom and Mom's lawyer do not seem that interested to me. Don't trust them at all.
As to the A's, when I listen to Lee and George, they seem genuine to me. I think they've been caught up in this awful mess and I do feel sorry for them, even though it infuriates me when I see them yelling and accusing or otherwise interacting negatively with media and protestors.
Cindy is hard to feel sorry for when I see her on TV and I percieve she's coming out to do battle. Her treatment of TM was completley unacceptable. But when I hear her on tape being interviewed by the police, I do pitty her mightily because I think she was caught up in a web of deceit spun by her own child. That is an awful reality for a mom and I know that from personal experience. I thank my lucky stars and the higher being that my little spider was exposed and dealt with early enough to (hopefully) save the spider while preventing such cobwebs in the future--if that makes any sense. Though it's easy for me to pity the A's, it's hard for me to trust them, although upon hearing George and Lee, I do think that they might very well be trying to help. Hearing Cindy, having been in the same position, though certainly not in anywhere nearly as deep, I think she's not trustworthy, because she's made what, to me, is a very bad choice...to keep on believing in the face of overwhelming evidence to the contrary and, imo, that's not a sane choice, and it's not a choice which helps or benefits anyone, not anyone in her family and certainly not society in general.