http://www.audioholics.com - Bookshelf vs Tower Speakers: Which One Is Better?: In this video Gene and Hugo discuss the questions that you need to ask yourself before deciding which type of speaker is best for you.
Question #1: Are you using your speakers for 2 channel audio or surround? Question #2: Are you looking to get the bass from a subwoofer or from your speakers? Question #3: What is your budget?
The answer to your questions above will determine which speaker is best for you.