Which is the best band of all times ?

I am a big fan of the Backstreet Boys music band which has been active since 1993 although one of its members left in 2006 and now is a four member band. I personally think that their music created a mark in the music world when they charted 12 U.S Top 40 hits on the Billboard Hot 100 and 16 UK Top 10 hits. This is a record and made them the highest selling music boy band of all times in the music world. Hence, I think they are the best band of all times and will probably have an unbroken record of success in the music world.