They are a less pricey species and have pretty much the same husbandry requirements as a ball python. They do like to burrow, I've not only heard this but have seen it here at home.
Ball Pythons
0.3 Normals (Coilette, Athena and Mary Jane)
1.0 Pastel (De Sol)
1.0 Spider (Zeus)
1.0 Mojave (Prometheus)
Boa Constrictors
0.1 Brazilian Rainbow Boa (Stella)
0.1 BCI (Kiyoko)
0.1 Dumerils Boa (Gloria)