My biggest snake so far, is an adult Sonoran Gopher. Would love to go bigger with a BCC, or a male dwarf Burm...someday. Unfortunately, I don't think BF would have anything that large in the house, and our home is really too small for much more in the way of ANY enclosures as it is. At some point, I'll probably build a good shed.
I find the gopher to be very calming. I like the feel of the weight of her when I have her draped on my shoulders. She moves slowly. The cornsnake, in contrast is always a bit restless.