What are the best Defensive Back tandems in the NFL?

either the chiefs or jets. the jets have been one of the best in the league for a few years. but look at at least the safeties (berry and flowers). both have been amazing last year. ive been following berry since college and he makes entire teams better. (trust me, tennessee would be a shell of itself without him). i dont think the bills have that good of a secondary though. but it turns out they have a really good offense if you put fitzpatrick in as qb. i also think green bay might have a top secondary, but theyre young and they werent great during the regular season, but great in the post season. lets see if its not just a post season thing where they crank up the d.