As stated above, it all comes down to what YOU want to keep and breed. You are going to be cleaning up its poop for many years, so you might as well like looking at it. A lot of people recommend starting off with co-dominant mutations as when bred to normals, each egg produced has a 50% chance of being that morph whereas recessive mutations only have a 25% chance if you are breeding hets together, but 100% chance if you are breeding two visuals together. Co-dom and recessive females can be expensive though, especially if you don't want a baby. If you have a $400 limit I'd start out with a really nice '10 or '11 co-dom female and raise her up for 2 years. During that time, you will probably have saved enough to buy yourself a nice co-dom male (which are not very expensive) and he can be ready to breed in less than a year if fed right. So by the time you are ready to breed, you have two very nice co-dom animals to breed.