TL;DR: we have two basenjis near Dallas, would be happy to let you meet them (potentially halfway in between); message me!
[I was clearly reading too quickly initially, but since I already typed it, I'm not going to delete this paragraph; glad to see we do have the same positive opinion!] Tanza -- Signet is actually a good, reputable breeder (https://www.facebook.com/signetkennels/); one of her dogs sired the pup we got last year. We were involved a bit with basenjis in Seattle (got our first pup in WA) before we moved to TX, and in my experience, she's as good as Platinum, FoPaw, Taji, or the other breeders we met in the Evergreen club.
Slprrex, there aren't a lot of basenji breeders in Texas, unfortunately, and a lot of the ones who are here aren't currently doing a ton of breeding, so it wouldn't surprise me if Brenda and Ciara are your best bet for a breeder locally. In looking at the Mandy's Pups page on FB, they don't seem to be doing any showing, and as silly as conformation may seem to people outside the dog show world, I would hesitate to get a puppy from someone who isn't actively trying to improve the breed (most easily verified by conformation). When we were first looking here in TX we ran into more than a couple of puppy mills, and while it doesn't seem like Mandy's would fall into that category, I would encourage you to do a LOT of research, meet the sire &/or dam, see where the dogs are kept, etc.
I completely understand the need to want to meet a basenji or two before you pursue picking one up; we went to a lure coursing event and were able to ask a ton of questions, hold dogs, see how smelly they were (not very; there were a dozen in an RV and it barely smelled like dog at all, and I have a very sensitive nose), etc. Anyway!
Meeting basenjis: we have two (quintessentially basenji-ish) basenjis and we're in the Dallas area, sort of where 183 and 114 converge (if you look at a map), but we might be able to meet up closer to you. We like to take our dogs out to less-populated places to let them run around, and while we've only gone west previously to the LBJ Grasslands, we could probably find something in the direction of Tyler, maybe partway between Tyler and Dallas, and meet there. We wouldn't be able to do that any sooner than the weekend of the 15th, and would almost certainly be able to make something over Thanksgiving work. If you were super anxious, I'd be happy to meet you this weekend in Dallas, but would completely understand if that didn't work for you. I think we can send private messages via this forum, so try that and we can connect via PM, if you'd like.