NO book could ever beat Harry Potter, but I would try the Maximum Ride series if I were you.
James Patterson is an amazing adult thriller novelist and this is sort of his teen series experiment.
It's really exciting and fast-paced.
He's really proud of it and it has a huge fanbase.
I'm pretty sure their making it a movie some time in the future as well.
Anyway, teens who can fly, enough said.
Also, if you haven't read Eragon, I would highly suggest that!
There are basically two types of Harry Potter fans.
The ones who like Twilight (romance/ character aspect) more, and the ones who like Eragon (fantasy/excitement) more.
~Cheers~