What Jam pack is best for me ?

Hi All

I am looking to purchase one or maybe all of the Jam packs for the purpose of producing my own Voiceover demo's.

I am trying to get the following types of royalty free background music : Corporate, News/Broadcast, Childrens books, Podcast, Radio Jingle and TV Ad etc etc - I cant really explain exactly my requirements but hopefully there is someone out there who will understand my needs and point me in the right direction of which jam Pack (if any) is right for me ?

Thanks