Clearly NSync, although they are temporarily disbanding for Lance's attempt to get into space and Justin's solo album. BSB isn't without its merits either, IMO Brian Littrel has the best voice of any boy band singer. 98 Degrees owns for slow songs, but they only have a few good fast ones. O-Town sounds too pre-fabbed...they all have good voices and all, and they producers did a great job on the tracks, but it doesn't flow as naturally as the other groups. BBMak is original, the most of them all, "Back Here" was my favorite song for awhile, they've kinda faded away recently, a shame. Blink182 I like, but they seem to think they are rebelling against pop when they ARE pop. New Kids were before my time...so no comment.