So I've always fed my BPs mice, but a fellow snake enthusiast I know insists I should feed rats because they are more nutritional. Is there really that much of a difference in nutrition to bother making the switch to rats? I tried with my older boy, and he just won't have them, but I have a new hatchling and I'm thinking that if they really are so much better, I'll just get her used to them now. So, is one really better than the other?