Define your criteria for "Best"

Wizards makes prepainted  miniatures which are a plus if your not a modeler. They dont hold a candle detail wise to say reaper miniatures but you have to paint those your self.
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quality wise nothing prepainted can hold a candle to even the most rudimentary job done by a practiced painter who cares. The trade off is time though. Given 4 hours you can do quality work and put something on the table that you can be proud of. Thats the rub though 5 bucks for a mini plus 4 hours of time. If its not something you enjoy doing 2 hours of even minimum wage will get you a dozen pre-painted figures. Reaper is good. GW are good as well. Personally I think Gamezone and Crocodile games make great figures.