I have a pair of Klipsch Pro Madia speakers and would like to upgrade.  I listen to a lot of music (mostly jazz, blues classic rock, classical) and I also do a little recording (acoustic instrument, like saxophone), but not enough in my mind to warrant an expensive and large studio set up. I have a small Mackie audio interface that I currently have connected via USB to the computer and the Klipsch speakers are connected to Mackie.  Works fine, but I would like better sound.  
Would the Vanatoos be a big improvement over the Klipsch I currently own?  Any other suggestions in the (approximately) $500 and below range?