Hi Mingus,
Instead of being an upstanding kind of guy and answering the question you asked, I'm going to ask you for more information:
What is your budget, and what system is this going in?
The reason I ask is that for a given budget, I've found that you frequently get MUCH better sound from bookshelf speakers than floor speakers of the same cost. And if you're doing home theatre, you'll have a subwoofer to take care of the low notes anyway.
I heard an Infinity system at Best Buy yesterday, and the booshelf speakers were WAY better sounding than the towers... I wish I could remember the series. I hate sloppy bass, and too many low cost towers have a thumpy wet-towel bass sound.
For what it's worth, this month's issue of "Absolute Sound" rated Paradigm Atom as the best sounding budget bookshelf speaker ($189). "Stereophile" also rated the Paradigm Atoms highly, along with the Inifinity Primus 150 ($198).
Let us know some more details as to your setup and price range, and we can help you more.