Childrens, Spotteds, Stimsons, and Womas are all good. Womas are still a bit expensive for some though. Balls are ok, but I have never had good luck feeding them as babies and I don't think they have a lot of personality. I would recommend an Australian Olive python before any of the other big snakes you mentioned. I have heard that Papuans are nice too, but I have never kept one so I couldn't tell you for sure. I have a burmese but I waited 15 years to add one to my collection not a good beginner's python at all IMO. He is actually the hardest feeder I have and he has shed problems no matter how much I tinker with the humidity.
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