I prefer to get the hamburger that has the fat content of 85/15. Just be sure to drain the fat. (I put the hamburger into a colander and drain it into a glass or a container I can just throw away.) It adds flavor that the leaner meats miss out on.
Or, often times we switch out ground hamburger for ground turkey meat. (Like in our Taco Soup.) Those eating it can't tell the difference. Also there's hardly any fat to drain.