This is a good place to start.

• browse the categories and select your instrument
• within each category you will find a list of tunes and packages
• each download has an accompanying sample file. 
• it's always a good idea to download both the complete version and the play along track of the same tune.  This gives you an example of how the pros play it. 
• check out the PAJ CD's, Double B Double V and Russ Miller's Arrival CD.
• let us know what you think.