Hello,
I would say that you cant go wrong with dumerils or jungle carpet pythons. I currenty have 2.2 pairs of both and love them. I smiled when you mentioned you would probably end up with both. I originally chose between dumerils and JCP's and now, as mentioned, enjoy both.
As you hinted at I would say that my JCP's are probably not as shy as my dumerils and better tolerate handling. As you have found, dumerils are a shy snake and seem to enjoy their privacy. My JCP's tend to be much more active than my dumerils, both in their cages and when being held. My JCP's also spend considerably more time outside their hides.
I have noticed that my JCP's were more inclined to strike and bite than my dumerils. My dumerils have rarely struck at me, while my JCP's were a little nippy when young. However, both my JCP's and dumerils have grown into very calm adults and are easy to handle. "Knock on wood" I haven't had either attempt to bite in a very long time.
I keep my Jungle Carpet Pythons a little warmer than my dumerils. I give my Jungles a range of about 78 degrees on their cool side to 90 degrees on their warm side. While I typically keep my dumerils at around 75 to 78 degrees on their cool side to 85 degrees on their warm side. In my experience dumerils feed more consistently when kept at slightly cooler temps than some other pythons and boas.
As far as humidity I would guess I keep them both at around 60 percent, though I am not positive on this. I have large water dishes in their cages, which are melamine and PVC. These cages seem to hold humidity pretty well. I typically keep the water dish just slightly on or near the heat tape to provide a little extra humidity (the heat tape is attached underneath my cages not inside). However, you may not need to do this as it is very dry where I live. In this setup both species of mine have had good sheds and have never had respiratory problems. A friend of mine orginally kept his dumeril in an aquarium with a screen top and it had incomplete sheds. He then swithed to a rubbermaid container, with adequate holes for ventilation, and the problem subsided.
The site you have been given at Just Dums is a very good source. I also know Reptilian Dreams and John Skipper Reptiles have good lines. Other good soures are New England Reptile Distributors (NERD) and Ophiological Services. I am sure there are plenty of other good breeders out there though.
Dumerils are great boas, which I have had for about seven years now. Contact me by email, if you want, and I can send you a magazine style article that I wrote about them. Just a couple things to keep in mind. Make sure you get a dumeril's boa that has been feeding consistently. They can sometimes be tough to get started. Buy one from a reputable breeder and make sure you have a dumerils from unrelated parent stock. The breeder should be aware of the genetic history of his animals, if not you might be cautious. Also enjoy your new purchase as both species are a true joy to keep.
Erin
starkserin@hotmail.com