Paul A.

Many diligent people will check the "problems" of a product before spending their hard earned cash, one way is to check the product forums to see what problems current users are having.
However, be warned that anyone visiting the Fitbit "community forum" will only see one side of the story. Please understand that the comments placed there are under extreme censorship with total bias toward the positives.
If a user so much as posts one honest word about their incredibly unreliable products then the post will be deleted and if you continue to do your best to make honest answers to other people also suffering the same issues then you will be banned. Happened to me today.
I have also spoken to many other members that have had their posts deleted or have also been banned. Do yourself a favor and buy any other product except a Fitbit.
My suggestion is to read through the several hundred reviews here and on other non-affiliated websites to find out how poor their products and especially their customer service is.
Their mods are utter fascists that want to stamp out honest opinions.

Be warned.