If Apple is so vengeful as to only provide review units to people who will give them glowing reviews, then that immediately invalidates every review from anyone who received an advance unit from Apple, because all of those reviews must have been made under the duress of knowing that anything other than a glowing review will put them on Apple's shit list.
In other words, by your own logic, the only reviews that can be trusted to have any degree of truth are those from people who didn't receive review units, such as the OP.
> They clearly have an agenda.
If it's so clear, perhaps you could enlighten us?