The best for what purpose? Concealed Carry? Home Defense? Competition? Hunting? Plinking? Collecting? Police Duty? Military Service? There are a myriad of reasons why someone might want a handgun and there is no one that is "best" of all of those reasons, only what is best for that particular individual and his/her primary use. Also, why the restriction to "NATO certified" pistols? There are a great number of pistols which are not "NATO certified" that, depending on the individual and his/her needs just as well, if not better, than those which are "NATO certified."