Here is a good page to take you through some of the things you should be looking at with each of these puppies.
Are you going to show this puppy?
If so, don't worry about the neck on #2.
As a novice handler, you will be fighting an uphill battle with either #1 or #3.
While a breeder may say don't worry about the markings, I am going to tell you that judges WILL look at those markings and not-so-great handling, coupled with distracting markings are a big fight in the show ring against more experienced handlers.
While #3 is best proportioned, you have that uphill battle to fight. As a FIRST show dog, I would go with the one that would be easier for you to do well with in the ring.
As always, this is solely my opinion of lord knows too many years with too many BADsenjis!
Best of luck to you.
Thank you. Yes this will be my first show basenji, but not the first time I’ve shown them. I will have lots of help from Tari and Sherry with the training and if I need it with the showing itself. Luckily, the breeders here are quite nice and friendly. I know that none of these bitches will do well as a special at all. They are expected to be a little on the small side and I’ve been told they should finish fine, but will not be good competing with specials.
My completely unprofessional, non breeder, not very experienced handler opinion: if they are all fairly nice dogs structure wise, then go with the one that cooperates most willingly.
As a complete novice at handling, I am fortunate that Callie will pretty much stay in whatever position I stack her in. She doesn't fight me. At the same time, however, she is fairly lifeless in the ring as she doesn't get excited about much. So if I can stack her well (which depends on me doing a great job that day), she will stay there & maintain that position, but then the challenge is to get her to stop looking so bored. I've taken other dogs in the ring that refuse to let me touch them, refuse to be stacked, etc. So for me, just for learning the ropes, Callie is nice because I don't have to worry about her fighting me, just getting her looking alert.
I'm sure somebody might disagree with my opinion, and like I said, I don't have much experience to offer or opinion on which dog to choose structurally. I just like having a dog that isn't difficult to stack.
I like to evaluate puppies at 8 weeks as I find (like Pat Hastings) that that usually is the best time to view their final attributes. I don't think that a forum and pictures are the best way to evaluate and personally, as I don't know what the USA show ring is like I wouldn't want to make a choice for you. If I was picking one for myself from the photo I'd go for no.3 as in my opinion she is the best made.