GARAGEBAND...IS a Recording Studio. And provided that you have taken the time to study the incredible capacity of what this tool can do, you will remain ignorant of what Mac has done for you.

At it's simpler levels, it provides you with the tools to experiment with music creation.

But then, add a proper Recording Interface like the PreSonus Firebox, good Mics, Synths, and
other external instruments, and you have a fierce puppy of a Recording Studio that is limited only by your talent and imagination.

I will relate one of my discussions with the guys from Apple who recently visited Montreal. "It's all there for you..", they said. But ya gotta "read the manual" so to speak...
http://www.apple.com/ilife/garageband/what-is-garageband.html
bob

From there, you have a lotta choices to make. But check out Logic Express8/Logic Studio...World Class stuff...BR