Outback and Mack are flesh peddlers in that they are just resellers, not actual breeders. BHB I'm not sure about. I personally have never dealt with Vin Russo but if I was looking for a pure blood line boa, he would be one of the guys I would talk to. If you are just looking for a pet, then honestly, paying the premium for a known pure blood line isn't going to matter to you really unless you just want the 'bragging rights'. But again with that said, if/when I decide to pull the trigger on an Iquitos or Pucallpa, I will be talking to him and Legacy Reptiles as both of them are known for their pure blood lines and something specific like that with the price tag that will come with it, I want to make sure I'm getting the real deal.