Adobe Audition is a flexible mulit-track editor with good cut and paste editing facilities.

If you're working on small 5-10 minute packages that require a fast turnaround with a multi format option Audtion is a good contender for its cost.

Audition originally came from the Cool Edit Pro family but it has come a long way and the latest version offers mixing automation along with an array of effects and processing.

Adobe make a whole host of software and more information can be found at their website:

www.adobe.com/products/audition/