Dave, I got a set of Logitech
Z-2300 speakers and I love them. I listen to a broad range of music from Debussy and orchestral classical to Dave Brubeck and Miles Davis to Metallica and these speakers stand up to the challenge nicely. I got them for about $100 at New Egg.
As far as Bose goes, you can do better - for less money. Bose are overrated IMO.
Klipsch are
very nice speakers indeed, but can be a little pricey. They are highly recommended, but might be a little out of your price range. I have a set of old KG4's for my home system and love them, but not sure I would get Klipsch for my computer.
It is about the sound - not the look - so skip the Creatures and SoundSticks. Their sound just does not measure up to the Z-2300's or Klipsch.