I bought these over a month ago, and these are by far, the best headphones I ever owned! I like Beats by Dr Dre, but I was sick and tired of seeing everyone using them. The SL99s are geared more towards sound quality, and if you listen to all kinds of music and not just hip-hop, this will be the best $99 spent for earbuds. The SL69 is geared more towards those who like super deep bass.
The only downside is getting them to stay in my ears when I'm lifting weights in the gym. But if you're gonna use them to just sit and listen, you'll have no problem at all. Especially if you're on a bus trip, train, airplane, etc! And when they mean isolation earbuds, they mean it. Someone can have a loud conversation with somoene else next to you, and you won't hear ANYTHING.
If you're looking for an alternative to Beats by Dr Dre at a decent price, look no further because Soul by Ludacris is definitely a WIN!!!