3 times in 6 months hardly sounds like a high enough occurance to infer favoritism, lots of things can make shipping experiences vary from order to order, and since most of the shipping process is out of Sadouns (and other retailers) hands, it would be pretty hard for them to practice preferential treatment, or at least hard to make a case against them for it.
It should be noted, that I realize that you are posting this to find out if there are more occurances, in which case I applaude you for taking the time to investigate before blanket accusations.
Just curious, if they are playing favorites, what do you think it is they are favoring? What commonalities did the 3 you observed possess? Location? Distance? Friends? Forum Rank(i.e. Pub Supporter, membership time, other status')? I am not trying to be argumentative, I just want to know where you're at on this.
Disclaimer: I myself have never bought from Sadoun. This post was in no way defense for Sadoun, merley a check-valve.