Some people have success with mice-base diet, others don't. The ones that don't have suggest with a rodent-based diet are the ones that OVERFEED their monitors and don't give them enough space. If the person is the kind that like to see your reptile eat everyday, then an insect-based diet is best for them. Most monitor owners think that their reptiles should eat every day, so that kind of diet does not work for them.
There is no real difference between the different kind of rodents other than the meat to bone ratio in some of them once you get into the larger ones. The only real differences that matter to the snakes sometimes is the size, smell and colour. Some snakes prefer certain colour, some prefer a certain smell. Breeders use a mouse-based or rat-based diet since they are readily avaliable at any store. However sometimes people end up with a wild-captive or captive-hatched and the owners end up having to breed their wild-based diet to keep them alive.
There is no real difference between the different kind of rodents other than the meat to bone ratio in some of them once you get into the larger ones. The only real differences that matter to the snakes sometimes is the size, smell and colour. Some snakes prefer certain colour, some prefer a certain smell. Breeders use a mouse-based or rat-based diet since they are readily avaliable at any store. However sometimes people end up with a wild-captive or captive-hatched and the owners end up having to breed their wild-based diet to keep them alive.

