I use SF 7.0 to clean up some samples. Cut some loops i sampled from television, other records or whatever.

I use it to record my DJ sets too.

Learn to use some shortcuts, it really speeds things up.
Like the up and down arrow for zooming in and out(or the mouse wheel). The spacebar for start/stop. You put a marker down with the letter M on the keyboard.

Ohh and the greatest thing in 7.0 to me is the Analog like VU meter. It really helps me when mastering. By default it's off. To enable it, just right click on the peak meter and select "Show VU/PPM"