Growing up as a kid in the late 1990's through the early 2000's you had your first crush and it was either the Backstreet Boys and *NSYNC.
Although both groups were very successful as they each won their fair share of awards and nominations, but- who is better?
As for myself, I am a huge Backstreet Boys fan.
I Grew up listening to all of their albums in which I have all 8, -of which was considered to be an official studio album- to this day hidden in the abyss of my room. As I may mention *NSYNC which only had 3 "official" studio albums but did have some nice Christmas music. I also had a book of them and an official concert on a VHS tape. Also, they have more songs that everyone knows and you can bop to. (I.e Quit Playing Games With My Heart, I Want It That Way, The One).
If "Larger than life" or "Everybody" comes on at a bar you know every girl will break out in song and dance, as only a few would do the same for "Bye Bye Bye" or "It's Gonna Be Me". *NSYNC is overrated. As I ran a Twitter poll between who was the best boy band and graciously the Backstreet Boys won.
Also as I should mention that the Backstreet Boys are still together today and are still on tour and their last album was created beautifully in 2013, and they have a documentary on Netflix! Which brings me to the point that *NSYNC is gone and away from each other, they only have one remaining member who is still in the eye of Hollywood-Justin Timberlake.
Finally, Disney World plays Backstreet Boys in their parks so it automatically makes it better, I've seen it for myself.